{
  "conflicts": [],
  "coverage": {
    "cells": {
      "SH3-native": {
        "af_prediction": 0,
        "cryoem": 0,
        "integrative": 0,
        "md": 0,
        "nmr_dynamics": 0,
        "nmr_shifts": 0,
        "nmr_structure": 11,
        "saxs_sans": 0,
        "xray": 38
      },
      "SH3-unfolded": {
        "af_prediction": 0,
        "cryoem": 0,
        "integrative": 0,
        "md": 0,
        "nmr_dynamics": 0,
        "nmr_shifts": 0,
        "nmr_structure": 0,
        "saxs_sans": 0,
        "xray": 0
      }
    },
    "data_levels": {
      "SH3-native": {
        "nmr_structure": "processed",
        "xray": "processed"
      },
      "SH3-unfolded": {}
    },
    "single_method_states": [],
    "states": [
      "SH3-native",
      "SH3-unfolded"
    ],
    "techniques": [
      "xray",
      "cryoem",
      "nmr_structure",
      "nmr_dynamics",
      "nmr_shifts",
      "saxs_sans",
      "integrative",
      "af_prediction",
      "md"
    ],
    "unmapped_evidence": 28
  },
  "curation": {
    "as_of": "2026-10-19",
    "curator": "draft (unreviewed)",
    "file": "P07751.yaml",
    "status": "draft"
  },
  "evidence": [
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3M0S",
      "evidence_id": "EV-PDB-3M0S-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.6
      },
      "provenance": {
        "deposit_id": "3M0S",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3M0S"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Crystal obtained in ammonium sulphate at pH 7"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "FMT",
          "NA"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/5IHN",
      "evidence_id": "EV-PDB-5IHN-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.5
      },
      "provenance": {
        "deposit_id": "5IHN",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/5IHN"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the alpha spectrin SH3 domain mutant N47G"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "ACT",
          "PRO",
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 5.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/5IHK",
      "evidence_id": "EV-PDB-5IHK-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.35
      },
      "provenance": {
        "deposit_id": "5IHK",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/5IHK"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the alpha spectrin SH3 domain mutant N47A"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "PEG",
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 5.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/5IHI",
      "evidence_id": "EV-PDB-5IHI-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.45
      },
      "provenance": {
        "deposit_id": "5IHI",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/5IHI"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the alpha spectrin SH3 domain double mutant V46G-D48G"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 9.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/4F17",
      "evidence_id": "EV-PDB-4F17-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.55
      },
      "provenance": {
        "deposit_id": "4F17",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/4F17"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the alpha spectrin SH3 domain at pH 9"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 5.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/4F16",
      "evidence_id": "EV-PDB-4F16-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.93
      },
      "provenance": {
        "deposit_id": "4F16",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/4F16"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the alpha spectrin SH3 domain at pH 5"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3NGP",
      "evidence_id": "EV-PDB-3NGP-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.084
      },
      "provenance": {
        "deposit_id": "3NGP",
        "doi": "10.1107/S1744309110030095",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3NGP"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "High resolution structure of alpha-spectrin SH3 domain mutant with a redesigned core"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "FMT"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3M0U",
      "evidence_id": "EV-PDB-3M0U-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.1
      },
      "provenance": {
        "deposit_id": "3M0U",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3M0U"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Hexagonal crystal obtained in sodium formate at pH 6.5."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 9.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3M0T",
      "evidence_id": "EV-PDB-3M0T-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.7
      },
      "provenance": {
        "deposit_id": "3M0T",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3M0T"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Crystal obtained in ammonium sulphate at pH 9."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3M0R",
      "evidence_id": "EV-PDB-3M0R-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.1
      },
      "provenance": {
        "deposit_id": "3M0R",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3M0R"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Crystal obtained in ammonium sulphate at pH 6."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 5.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3M0Q",
      "evidence_id": "EV-PDB-3M0Q-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.75
      },
      "provenance": {
        "deposit_id": "3M0Q",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3M0Q"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Crystal obtained in ammonium sulphate at pH 5."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 4.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3M0P",
      "evidence_id": "EV-PDB-3M0P-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.6
      },
      "provenance": {
        "deposit_id": "3M0P",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3M0P"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the R21D mutant of alpha-spectrin SH3 domain. Crystal obtained in ammonium sulphate at pH 4."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/3I9Q",
      "evidence_id": "EV-PDB-3I9Q-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.45
      },
      "provenance": {
        "deposit_id": "3I9Q",
        "doi": "10.1107/S0907444909038037",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/3I9Q"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of the triple mutant S19G-P20D-R21S of alpha spectrin SH3 domain"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 25.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2ROT",
      "evidence_id": "EV-PDB-2ROT-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2ROT",
        "doi": "10.1016/j.bbapap.2009.08.021",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2ROT"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "Structure of chimeric variant of SH3 domain- SHH"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 4.0,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2RMO",
      "evidence_id": "EV-PDB-2RMO-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2RMO",
        "doi": "10.1134/S1068162008050075",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2RMO"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "Solution structure of alpha-spectrin_SH3-bergerac from Chicken"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "CL"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 4.6,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A,B,C,D)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2OAW",
      "evidence_id": "EV-PDB-2OAW-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.9
      },
      "provenance": {
        "deposit_id": "2OAW",
        "doi": "10.1016/j.bpc.2008.10.011",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2OAW"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Structure of SHH variant of \"Bergerac\" chimera of spectrin SH3"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.2,
        "salt_mM": null,
        "temperature_c": 19.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2NUZ",
      "evidence_id": "EV-PDB-2NUZ-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.85
      },
      "provenance": {
        "deposit_id": "2NUZ",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2NUZ"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "crystal structure of alpha spectrin SH3 domain measured at room temperature"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2LJ3",
      "evidence_id": "EV-PDB-2LJ3-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2LJ3",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2LJ3"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "PFBD: High-throughput Strategy of Backbone fold Determination for small well-folded proteins in less than a day"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 4.0,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "11-mer peptide,Spectrin alpha chain, non-erythrocytic 1,Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2KXD",
      "evidence_id": "EV-PDB-2KXD-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2KXD",
        "doi": "10.1134/S0026893310060129",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2KXD"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "The structure of SH3-F2"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2KR3",
      "evidence_id": "EV-PDB-2KR3-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2KR3",
        "doi": "10.1134/S1068162010040059",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2KR3"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "Solution structure of SHA-D"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 30.0
      },
      "construct": {
        "description": "Spectrin alpha chain, brain and P41 peptide chimera (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2JMC",
      "evidence_id": "EV-PDB-2JMC-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2JMC",
        "doi": "10.1016/j.febslet.2007.01.032",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2JMC"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "Chimer between Spc-SH3 and P41"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2JMA",
      "evidence_id": "EV-PDB-2JMA-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2JMA",
        "doi": "10.1186/1472-6807-7-22",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2JMA"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "R21A Spc-SH3:P41 complex"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2JM9",
      "evidence_id": "EV-PDB-2JM9-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2JM9",
        "doi": "10.1186/1472-6807-7-22",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2JM9"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "R21A Spc-SH3 bound"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2JM8",
      "evidence_id": "EV-PDB-2JM8-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "2JM8",
        "doi": "10.1186/1472-6807-7-22",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2JM8"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "R21A Spc-SH3 free"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2F2X",
      "evidence_id": "EV-PDB-2F2X-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.6
      },
      "provenance": {
        "deposit_id": "2F2X",
        "doi": "10.1002/prot.21284",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2F2X"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "alpha-spectrin SH3 domain R21G mutant"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2F2W",
      "evidence_id": "EV-PDB-2F2W-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.7
      },
      "provenance": {
        "deposit_id": "2F2W",
        "doi": "10.1002/prot.21284",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2F2W"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "alpha-spectrin SH3 domain R21A mutant"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "FMT"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2F2V",
      "evidence_id": "EV-PDB-2F2V-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.85
      },
      "provenance": {
        "deposit_id": "2F2V",
        "doi": "10.1002/prot.21284",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2F2V"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "alpha-spectrin SH3 domain A56G mutant"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/2CDT",
      "evidence_id": "EV-PDB-2CDT-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.54
      },
      "provenance": {
        "deposit_id": "2CDT",
        "doi": "10.1002/PROT.21284",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/2CDT"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "alpha-SPECTRIN SH3 DOMAIN A56S MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1UUE",
      "evidence_id": "EV-PDB-1UUE-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.6
      },
      "provenance": {
        "deposit_id": "1UUE",
        "doi": "10.1073/PNAS.0304180101",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1UUE"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "a-SPECTRIN SH3 DOMAIN (V44T, D48G MUTANT)"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "K",
          "PO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 8.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1U5P",
      "evidence_id": "EV-PDB-1U5P-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.0
      },
      "provenance": {
        "deposit_id": "1U5P",
        "doi": "10.1016/j.jmb.2004.09.019",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1U5P"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of Repeats 15 and 16 of Chicken Brain Alpha Spectrin"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 8.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A,B)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1U4Q",
      "evidence_id": "EV-PDB-1U4Q-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.5
      },
      "provenance": {
        "deposit_id": "1U4Q",
        "doi": "10.1016/j.jmb.2004.09.019",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1U4Q"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure of Repeats 15, 16 and 17 of Chicken Brain Alpha Spectrin"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "AZI"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.2,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1U06",
      "evidence_id": "EV-PDB-1U06-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.49
      },
      "provenance": {
        "deposit_id": "1U06",
        "doi": "10.1007/s10858-005-1718-z",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1U06"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "crystal structure of chicken alpha-spectrin SH3 domain"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "ALPHA-SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1TUD",
      "evidence_id": "EV-PDB-1TUD-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.77
      },
      "provenance": {
        "deposit_id": "1TUD",
        "doi": "10.1006/jmbi.1994.0171",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1TUD"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "ALPHA-SPECTRIN SRC HOMOLOGY 3 DOMAIN, CIRCULAR PERMUTANT, CUT AT N47-D48"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "ALPHA-SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1TUC",
      "evidence_id": "EV-PDB-1TUC-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.02
      },
      "provenance": {
        "deposit_id": "1TUC",
        "doi": "10.1006/jmbi.1994.0171",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1TUC"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "ALPHA-SPECTRIN SRC HOMOLOGY 3 DOMAIN, CIRCULAR PERMUTANT, CUT AT S19-P20"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "ALPHA-SPECTRIN SH3 DOMAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1SHG",
      "evidence_id": "EV-PDB-1SHG-1",
      "mappings": [
        {
          "confidence": "high",
          "justification": "Representative native structure; title and UniProt mapping checked against RCSB.",
          "rule": "curator_assignment",
          "state_id": "SH3-native",
          "who": "curator:draft (unreviewed)"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.8
      },
      "provenance": {
        "deposit_id": "1SHG",
        "doi": "10.1038/359851a0",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1SHG"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "CRYSTAL STRUCTURE OF A SRC-HOMOLOGY 3 (SH3) DOMAIN"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1QKX",
      "evidence_id": "EV-PDB-1QKX-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.8
      },
      "provenance": {
        "deposit_id": "1QKX",
        "doi": "10.1110/ps.9.12.2322",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1QKX"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Alpha-spectrin Src Homology 3 domain, N47A mutant in the distal loop."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL",
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "ALPHA II SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1QKW",
      "evidence_id": "EV-PDB-1QKW-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.0
      },
      "provenance": {
        "deposit_id": "1QKW",
        "doi": "10.1110/ps.9.12.2322",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1QKW"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Alpha-spectrin Src Homology 3 domain, N47G mutant in the distal loop."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 4.0,
        "salt_mM": null,
        "temperature_c": 13.85
      },
      "construct": {
        "description": "ALPHA SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1PWT",
      "evidence_id": "EV-PDB-1PWT-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.77
      },
      "provenance": {
        "deposit_id": "1PWT",
        "doi": "10.1021/bi981515u",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1PWT"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "THERMODYNAMIC ANALYSIS OF ALPHA-SPECTRIN SH3 AND TWO OF ITS CIRCULAR PERMUTANTS WITH DIFFERENT LOOP LENGTHS: DISCERNING THE REASONS FOR RAPID FOLDING IN PROTEINS"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "AZI"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -163.15
      },
      "construct": {
        "description": "Spectrin alpha chain, brain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1NEG",
      "evidence_id": "EV-PDB-1NEG-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.3
      },
      "provenance": {
        "deposit_id": "1NEG",
        "doi": "10.1023/B:JSFG.0000016119.50040.a3",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1NEG"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Crystal Structure Analysis of N-and C-terminal labeled SH3-domain of alpha-Chicken Spectrin"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.5,
        "salt_mM": null,
        "temperature_c": 6.85
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN, BRAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1M8M",
      "evidence_id": "EV-PDB-1M8M-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "1M8M",
        "doi": "10.1038/nature01070",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1M8M"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "SOLID-STATE MAS NMR STRUCTURE OF THE A-SPECTRIN SH3 DOMAIN"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL",
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1HD3",
      "evidence_id": "EV-PDB-1HD3-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.98
      },
      "provenance": {
        "deposit_id": "1HD3",
        "doi": "10.1073/PNAS.072387799",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1HD3"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN F52Y MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 4.5,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1H8K",
      "evidence_id": "EV-PDB-1H8K-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.7
      },
      "provenance": {
        "deposit_id": "1H8K",
        "doi": "10.1038/NSB799",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1H8K"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN A11V, V23L, M25V, V53I, V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1G2B",
      "evidence_id": "EV-PDB-1G2B-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.12
      },
      "provenance": {
        "deposit_id": "1G2B",
        "doi": "10.1107/S090744490001581X",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1G2B"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "ALPHA-SPECTRIN SRC HOMOLOGY 3 DOMAIN, CIRCULAR PERMUTANT, CUT AT N47-D48"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1E7O",
      "evidence_id": "EV-PDB-1E7O-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.2
      },
      "provenance": {
        "deposit_id": "1E7O",
        "doi": "10.1016/S0022-2836(03)00273-0",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1E7O"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN A11V, V23L, M25V, V44I, V58L MUTATIONS"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1E6H",
      "evidence_id": "EV-PDB-1E6H-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.01
      },
      "provenance": {
        "deposit_id": "1E6H",
        "doi": "10.1038/NSB799",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1E6H"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN A11V, M25I, V44I, V58L MUTANTS"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "SPECTRIN ALPHA CHAIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1E6G",
      "evidence_id": "EV-PDB-1E6G-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.3
      },
      "provenance": {
        "deposit_id": "1E6G",
        "doi": "10.1038/NSB799",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1E6G"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN A11V, V23L, M25I, V53I, V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 5.6,
        "salt_mM": null,
        "temperature_c": -165.15
      },
      "construct": {
        "description": "PROTEIN (ALPHA SPECTRIN) (chains A,B,C)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1CUN",
      "evidence_id": "EV-PDB-1CUN-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.0
      },
      "provenance": {
        "deposit_id": "1CUN",
        "doi": "10.1016/S0092-8674(00)81980-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1CUN"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "CRYSTAL STRUCTURE OF REPEATS 16 AND 17 OF CHICKEN BRAIN ALPHA SPECTRIN"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": -173.15
      },
      "construct": {
        "description": "A-SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1BK2",
      "evidence_id": "EV-PDB-1BK2-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.01
      },
      "provenance": {
        "deposit_id": "1BK2",
        "doi": "10.1038/1418",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1BK2"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN D48G MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.0,
        "salt_mM": null,
        "temperature_c": 34.85
      },
      "construct": {
        "description": "ALPHA SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1AJ3",
      "evidence_id": "EV-PDB-1AJ3-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "1AJ3",
        "doi": "10.1006/jmbi.1997.1344",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1AJ3"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "SOLUTION STRUCTURE OF THE SPECTRIN REPEAT, NMR, 20 STRUCTURES"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 23.85
      },
      "construct": {
        "description": "ALPHA-SPECTRIN (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/1AEY",
      "evidence_id": "EV-PDB-1AEY-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "1AEY",
        "doi": "10.1023/A:1018330122908",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/1AEY"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "ALPHA-SPECTRIN SRC HOMOLOGY 3 DOMAIN, SOLUTION NMR, 15 STRUCTURES"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "spectrin (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/5M6S",
      "evidence_id": "EV-PDB-5M6S-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 4.8
      },
      "provenance": {
        "deposit_id": "5M6S",
        "doi": "10.1038/nsmb.3355",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/5M6S"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "folding intermediate of spectrin R16"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8CF4",
      "evidence_id": "EV-PDB-8CF4-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "8CF4",
        "doi": "10.1021/acs.jpclett.2c03398",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8CF4"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "SH3 domain solved by the exact solid-state method from the Bruker Dynamics Center using the combined correction method with PDB 2NUZ"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8CHG",
      "evidence_id": "EV-PDB-8CHG-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "8CHG",
        "doi": "10.1021/acs.jpclett.2c03398",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8CHG"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "SH3 domain solved by the exact solid-state method from the Bruker Dynamics Center using the correction for dipolar truncation with PDB 2NUZ"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + NMR restraints",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8CHH",
      "evidence_id": "EV-PDB-8CHH-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "8CHH",
        "doi": "10.1021/acs.jpclett.2c03398",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8CHH"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_structure",
      "title": "SH3 domain solved by the exact solid-state method from the Bruker Dynamics Center using the correction method for spin-diffusion with PDB 2NUZ as reference"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL",
          "PO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains AAA)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EYB",
      "evidence_id": "EV-PDB-9EYB-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.337
      },
      "provenance": {
        "deposit_id": "9EYB",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EYB"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9L, A11V, V23L, M25C, V46W, V53L and V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL",
          "PO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EYC",
      "evidence_id": "EV-PDB-9EYC-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.06
      },
      "provenance": {
        "deposit_id": "9EYC",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EYC"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9L, A11V, V23L, M25C, V46W, V53L and V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL",
          "PO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains AAA)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EYE",
      "evidence_id": "EV-PDB-9EYE-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.13
      },
      "provenance": {
        "deposit_id": "9EYE",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EYE"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9L, A11V, L31V, V44I, V53I MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.8,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EYF",
      "evidence_id": "EV-PDB-9EYF-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.34
      },
      "provenance": {
        "deposit_id": "9EYF",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EYF"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9L, A11V, V23L, M25L, V46Y, V53I MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "GOL"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9IH6",
      "evidence_id": "EV-PDB-9IH6-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.31
      },
      "provenance": {
        "deposit_id": "9IH6",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9IH6"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9Y, A11V, V23L, M25V, V53L, V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9IH7",
      "evidence_id": "EV-PDB-9IH7-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.12
      },
      "provenance": {
        "deposit_id": "9IH7",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9IH7"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9L, A11V, V23I, M25V, V46F, V53L, V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "SO4"
        ],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": -193.15
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains AAA)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9IHA",
      "evidence_id": "EV-PDB-9IHA-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 1.013
      },
      "provenance": {
        "deposit_id": "9IHA",
        "doi": "10.1002/pro.70210",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9IHA"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "A-SPECTRIN SH3 DOMAIN V9L, A11V, M25V, V46F, V58L MUTANT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "spectrin alpha chain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF/IHM",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9A3E",
      "evidence_id": "EV-PDB-9A3E-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "9A3E",
        "doi": "10.1021/acs.jpclett.2c03398",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9A3E"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "integrative",
      "title": "Structure of SH3 domain from chicken alpha spectrin determined using restraints from solid-state NMR"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "spectrin alpha chain (chains A)",
        "labels": []
      },
      "data_format": "mmCIF/IHM",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9A0A",
      "evidence_id": "EV-PDB-9A0A-1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "structure",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "9A0A",
        "doi": "10.1016/j.str.2020.06.001",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9A0A"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "integrative",
      "title": "Protein motional details and dynamics of spectrin alpha chain"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Entry-level ligand list; oligosaccharides appear as branched entities. pH and temperature are null when not deposited in machine-readable fields.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/7S4R",
      "evidence_id": "EV-PDB-7S4R-1",
      "mappings": [
        {
          "confidence": "medium",
          "justification": "Experimental structure titled as the SH3 domain; the UniProt entry covers the whole spectrin chain, so other repeats are excluded by title.",
          "rule": "sh3-structures-native",
          "state_id": "SH3-native",
          "who": "rule:sh3-structures-native"
        }
      ],
      "molecule_id": "P07751",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.1
      },
      "provenance": {
        "deposit_id": "7S4R",
        "doi": "10.1107/S1600577522002508",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/7S4R"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "Serial Macromolecular Crystallography at ALBA Synchrotron Light Source - alpha Spectrin-SH3 domain"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 29.85
      },
      "construct": {
        "description": "BMRB data: 13C chemical shifts, 15N chemical shifts, 1H chemical shifts",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=15013",
      "evidence_id": "EV-BMRB-15013",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "chemical_shift",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr15013",
        "doi": "10.13018/BMR15013",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=15013"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_shifts",
      "title": "Chimer between Spc-SH3 and P41"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 9.85
      },
      "construct": {
        "description": "BMRB data: order parameters, T1 relaxation values, T2 relaxation values",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=15144",
      "evidence_id": "EV-BMRB-15144",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "relaxation_rate",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr15144",
        "doi": "10.13018/BMR15144",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=15144"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_dynamics",
      "title": "Side-chain relaxation in SH3 domain from alpha-spectrin measured at multiple temperatures"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 6.5,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "BMRB data: 13C chemical shifts, 15N chemical shifts, 1H chemical shifts",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=17915",
      "evidence_id": "EV-BMRB-17915",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "chemical_shift",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr17915",
        "doi": "10.13018/BMR17915",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=17915"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_shifts",
      "title": "PFBD: High-throughput Strategy of Backbone fold Determination for small well-folded proteins in less than a day"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 6.8,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "BMRB data: 13C chemical shifts, 15N chemical shifts, 1H chemical shifts, T1 relaxation values, T2 relaxation values, coupling constants",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=18260",
      "evidence_id": "EV-BMRB-18260",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "relaxation_rate",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr18260",
        "doi": "10.13018/BMR18260",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=18260"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_dynamics",
      "title": "1H, 13C and 15N resonance assignment of chicken brain alpha spectrin repeat 17"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 7.0,
        "salt_mM": null,
        "temperature_c": 24.85
      },
      "construct": {
        "description": "BMRB data: 13C chemical shifts, 15N chemical shifts, 1H chemical shifts",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=34785",
      "evidence_id": "EV-BMRB-34785",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "chemical_shift",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr34785",
        "doi": "10.13018/BMR34785",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=34785"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_shifts",
      "title": "SH3 domain solved by the exact solid-state method from the Bruker Dynamics Center using the combined correction method with PDB 2NUZ"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "BMRB data: 1H chemical shifts",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=7305",
      "evidence_id": "EV-BMRB-7305",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "chemical_shift",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr7305",
        "doi": "10.13018/BMR7305",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=7305"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_shifts",
      "title": "R21A Spc-SH3 free"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 3.5,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "BMRB data: 1H chemical shifts",
        "labels": []
      },
      "data_format": "NMR-STAR",
      "data_level": "processed",
      "data_link": "https://bmrb.io/data_library/summary/index.php?bmrbId=7306",
      "evidence_id": "EV-BMRB-7306",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "chemical_shift",
        "uncertainty": null,
        "unit": null,
        "value": null
      },
      "provenance": {
        "deposit_id": "bmr7306",
        "doi": "10.13018/BMR7306",
        "licence": "CC0 1.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=7306"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_shifts",
      "title": "R21A Spc-SH3 bound"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": "10 mM citric acid, 150 mM NaCl, 100 mM 5-methyl uridine",
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "Other molecules in the sample are listed as partners; Rg is of the whole sample. Dmax 4.5 nm.",
        "ph": 3.0,
        "salt_mM": null,
        "temperature_c": 25.0
      },
      "construct": {
        "description": "Spectrin alpha chain, non-erythrocytic 1",
        "labels": []
      },
      "data_format": "scattering curve",
      "data_level": "processed",
      "data_link": "https://www.sasbdb.org/data/SASDJJ3/",
      "evidence_id": "EV-SASBDB-SASDJJ3",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "radius_of_gyration",
        "uncertainty": 0.003,
        "unit": "nm",
        "value": 1.315
      },
      "provenance": {
        "deposit_id": "SASDJJ3",
        "doi": "10.1107/S2059798320010700",
        "licence": "CC BY 4.0 (verify)",
        "retrieved": "2026-10-19",
        "source": "SASBDB",
        "url": "https://www.sasbdb.org/data/SASDJJ3/"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "saxs_sans",
      "title": "Improving data quality and expanding BioSAXS experiments to low-molecular-weight and low-concentration protein samples."
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_silico",
        "ions": [],
        "ligands": [],
        "notes": "Computed prediction; no experimental conditions.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "AlphaFold Monomer v2.0 pipeline, residues 1-2477",
        "labels": []
      },
      "data_format": "mmCIF, PAE JSON",
      "data_level": "processed",
      "data_link": "https://alphafold.ebi.ac.uk/entry/P07751",
      "evidence_id": "EV-AFDB-AF-P07751-F1",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "plddt",
        "uncertainty": null,
        "unit": "pLDDT",
        "value": 75.62
      },
      "provenance": {
        "deposit_id": "AF-P07751-F1",
        "doi": null,
        "licence": "CC BY 4.0",
        "retrieved": "2026-10-19",
        "source": "AlphaFold DB",
        "url": "https://alphafold.ebi.ac.uk/entry/P07751"
      },
      "reader": null,
      "source_kind": "computed",
      "technique": "af_prediction",
      "title": "AlphaFold DB prediction AF-P07751-F1"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_silico",
        "ions": [],
        "ligands": [],
        "notes": "Simulation; temperature is the thermostat setting.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "start 1G2B; Amber Parm99",
        "labels": []
      },
      "data_format": "trajectory",
      "data_level": "processed",
      "data_link": "https://mmb.mddbr.eu/#/id/A00HC/overview",
      "evidence_id": "EV-MDDB-A00HC",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "trajectory",
        "uncertainty": null,
        "unit": "ns",
        "value": 10.0
      },
      "provenance": {
        "deposit_id": "A00HC",
        "doi": "10.1016/j.str.2010.07.013",
        "licence": "This trajectory dataset is released under a Creative Commons Attribution 4.0 International Public License",
        "retrieved": "2026-10-19",
        "source": "MDDB",
        "url": "https://mmb.mddbr.eu/#/id/A00HC/overview"
      },
      "reader": null,
      "source_kind": "computed",
      "technique": "md",
      "title": "MoDEL 1G2B"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_silico",
        "ions": [],
        "ligands": [],
        "notes": "Simulation; temperature is the thermostat setting.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "start 1PWT; Amber Parm99",
        "labels": []
      },
      "data_format": "trajectory",
      "data_level": "processed",
      "data_link": "https://mmb.mddbr.eu/#/id/A00W4/overview",
      "evidence_id": "EV-MDDB-A00W4",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "trajectory",
        "uncertainty": null,
        "unit": "ns",
        "value": 10.0
      },
      "provenance": {
        "deposit_id": "A00W4",
        "doi": "10.1016/j.str.2010.07.013",
        "licence": "This trajectory dataset is released under a Creative Commons Attribution 4.0 International Public License",
        "retrieved": "2026-10-19",
        "source": "MDDB",
        "url": "https://mmb.mddbr.eu/#/id/A00W4/overview"
      },
      "reader": null,
      "source_kind": "computed",
      "technique": "md",
      "title": "MoDEL 1PWT"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_silico",
        "ions": [],
        "ligands": [],
        "notes": "Simulation; temperature is the thermostat setting.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "start 1SHG; Amber Parm99",
        "labels": []
      },
      "data_format": "trajectory",
      "data_level": "processed",
      "data_link": "https://mmb.mddbr.eu/#/id/A010H/overview",
      "evidence_id": "EV-MDDB-A010H",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "trajectory",
        "uncertainty": null,
        "unit": "ns",
        "value": 10.0
      },
      "provenance": {
        "deposit_id": "A010H",
        "doi": "10.1016/j.str.2010.07.013",
        "licence": "This trajectory dataset is released under a Creative Commons Attribution 4.0 International Public License",
        "retrieved": "2026-10-19",
        "source": "MDDB",
        "url": "https://mmb.mddbr.eu/#/id/A010H/overview"
      },
      "reader": null,
      "source_kind": "computed",
      "technique": "md",
      "title": "MoDEL 1SHG"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_silico",
        "ions": [],
        "ligands": [],
        "notes": "Simulation; temperature is the thermostat setting.",
        "ph": null,
        "salt_mM": null,
        "temperature_c": 26.85
      },
      "construct": {
        "description": "start 1TUC; Amber Parm99",
        "labels": []
      },
      "data_format": "trajectory",
      "data_level": "processed",
      "data_link": "https://mmb.mddbr.eu/#/id/A012Z/overview",
      "evidence_id": "EV-MDDB-A012Z",
      "mappings": [],
      "molecule_id": "P07751",
      "observable": {
        "type": "trajectory",
        "uncertainty": null,
        "unit": "ns",
        "value": 10.0
      },
      "provenance": {
        "deposit_id": "A012Z",
        "doi": "10.1016/j.str.2010.07.013",
        "licence": "This trajectory dataset is released under a Creative Commons Attribution 4.0 International Public License",
        "retrieved": "2026-10-19",
        "source": "MDDB",
        "url": "https://mmb.mddbr.eu/#/id/A012Z/overview"
      },
      "reader": null,
      "source_kind": "computed",
      "technique": "md",
      "title": "MoDEL 1TUC"
    }
  ],
  "models": [
    {
      "assumptions": null,
      "basis": "observed",
      "constraints_used": [
        "EV-PDB-1SHG-1"
      ],
      "file": "models/P07751/SH3-native.cif",
      "format": "mmCIF",
      "model_id": "SH3-native-cif",
      "molecule_id": "P07751",
      "provenance": {
        "deposit_id": "1SHG",
        "doi": "10.1038/359851a0",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://files.rcsb.org/download/1SHG.cif"
      },
      "state_id": "SH3-native"
    },
    {
      "assumptions": null,
      "basis": "observed",
      "constraints_used": [
        "EV-PDB-1SHG-1"
      ],
      "file": "models/P07751/SH3-native.pdb",
      "format": "PDB",
      "model_id": "SH3-native-pdb",
      "molecule_id": "P07751",
      "provenance": {
        "deposit_id": "1SHG",
        "doi": "10.1038/359851a0",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://files.rcsb.org/download/1SHG.pdb"
      },
      "state_id": "SH3-native"
    }
  ],
  "molecule": {
    "components": [],
    "domains": [
      {
        "end": 1026,
        "name": "SH3",
        "start": 967
      },
      {
        "end": 2363,
        "name": "EF-hand 1",
        "start": 2328
      },
      {
        "end": 2406,
        "name": "EF-hand 2",
        "start": 2371
      },
      {
        "end": 2444,
        "name": "EF-hand 3",
        "start": 2409
      }
    ],
    "gene": "SPTAN1",
    "identifiers": {
      "genbank": null,
      "isoform": null,
      "nakb": null,
      "pdb": [],
      "rfam": null,
      "rnacentral": null,
      "uniprot": "P07751"
    },
    "ligands": [
      "Ca(2+)"
    ],
    "modifications": [
      {
        "kind": "ptm",
        "name": "Phosphotyrosine",
        "position": 1176,
        "source": "UniProtKB"
      }
    ],
    "molecule_id": "P07751",
    "molecule_type": "protein",
    "name": "Spectrin alpha chain, non-erythrocytic 1",
    "organism": {
      "name": "Gallus gallus",
      "taxon_id": 9031
    },
    "provenance": {
      "deposit_id": "P07751",
      "doi": null,
      "licence": "CC BY 4.0 (UniProt)",
      "retrieved": "2026-10-19",
      "source": "UniProtKB",
      "url": "https://www.uniprot.org/uniprotkb/P07751/entry"
    },
    "sequence": "MDPSGVKVLETAEDIQERRQQVLDRYHRFKELSSLRRQKLEDSYRFQFFQRDADELGKWIQEKLQIASDENYKDPSNLQGKLQKHQAFEAEVQANSGAIVKLDETGNQMINEGHFASETIRTRLQELHRLWELLLEKMREKGVKLLQAQKLVQFLRECEDVMDWINDKEAIVTSEELGQDLEHVEVLQKKFEEFQTDLAAHEERVNEVNQFAGKLIQEQHPEEELIKSKQDEVNASWQRLKGLAQQRQGKLFGAAEVQRFNRDVDETISWIKEKGQLMASDDFGRDLASVQALLRKHEGLERDLAAFHHKVKALCAEADRLQQSHPINASQIQVKREELIANWEQIRTLAAERHARLNDSYRLQRFLADFRDLTSWVTEMKALINADELANDVAGAEALLDRHQEHKGEIDAHEDSFRSADESGQALLAAGHYASDEVKEKLTILSDERSALLELWELRRQQYEQCMDLQLFYRDTEQVDNWMSKQEAFLLNEDLGDSLDSVEALLKKHEDFEKSLSAQEEKITALDEFATKLIQNNHYAMDDVATRRDALLSRRNALHERAMKRRAQLADSFHLQQFFRDSDELKSWVNEKMKTATDEAYKDPSNLQGKVQKHQAFEAELSANQSRIDALEKAGQKLIDVNHYASDEVAARMNEVISLWKKLLEATELKGIKLREANQQQQFNRNVEDIELWLYEVEGHLASDDYGKDLTSVQNLQKKHALLEADVAAHQDPIDGITIQARQFQDAGHFDADNIKKKQEALVARYEALKDPMVARKQKLADSLRLQQLFRDIEDEETWIREKEPIAASTNRGKDLIGVQNLLKKHQALQAEIAGHEPRIKAVTQKGNAMVEEGHFAAEDVKIKLNELNQKWDSLKAKASQRRQDLEDSLQAQQYFADANEAQSWMREKEPIVGSTDYGKDEDSAEALLKKHEALMSDLSAYGSSIQALREQAQSCRQQVAPTDDETGKELVLALYDYQEKSPREVTMKKGDILTLLNSTNKDWWKVEVNDRQGFVPAAYVKKLDPAQSASRENLLEEQGSIALRQEQIDNQTLITKEVGSVSLRMKQVEELYHSLLELGEKRKGMLEKSCKKFMLFREANELQQWINEKEAALTNEEVGADLEQVEVLQKKFDDFQKDLKANESRLKDINKVANDLESEGLMAEEVQAVEHQEVYGMMPRDETDSKTVSPWKSARMMVHTVATFNSIKELNERWRSLQQLAEERSQLLGSADEVQRFHRDADETKEWIEEKNQALNTDNYGHDLASVQALQRNDEGFERDLAALGDKVNSLGETAQRLIQSHPELAEDLQEKCTELNQAWSSLGKRADQRKEKLGDSHDLQRFLSDFRDLMSWINGIRGLVSSDELAKDVTGAEALLERHQEHRTEIDARAGTFQAFEQFGQQLLARGHYASPEIKEKLDILDQERTDLEKAWVQRRMMLDQCLELQLFHRDCEQAENWMAAREAFLNTEDKGDSLDSVEALIKKHEDFDKAINVQEEKIAVLQSFADQLIAADHYAKGVIANRRNEVLDRWRRLKAQMIEKRSKLGESQTLQQFSRDVDEIEAWISEKLQTASDESYKDPTNIQLSKLLSKHQKHQAFEAELHANADRIRGVIEMGNPLIERGACAGSEDAVKARLAALADQWEFLVQKSSEKSQKLKEANKQQNFNTGIKDFDFWLSEVEALLASEDYGKDLASVNNLLKKHQLLEADISAHEDRLKDLNSQADSLMTSSAFDTSQVKDKRETINGRFQRIKSMAAARRAKLNESHRLHQFFRDMDDEESWIKEKKLLVSSEDYGRDLTGVQNLRKKHKRLEAELAAHEPAIQGVLDTGKKLSDDNTIGKEEIQQRLAQFVDHWKELKQLAAARGQRLEESLEYQQFVANVEEEEAWINEKMTLVASEDYGDTLAAIQGLLKKHEAFETDFTVHKDRVNDVCANGEDLIKKNNHHVENITAKMKGLKGKVSDLEKAAAQRKAKLDENSAFLQFNWKADVVESWIGEKENSLKTDDYGRDLSSVQTLLTKQETFDAGLQAFQQEGIANITALKDQLLAAKHIQSKAIEVRHASLMKRWNQLLANSAARKKKLLEAQEHFRKVEDLFLTFAKKASAFNSWFENAEEDLTDPVRCNSLEEIKALREAHDAFRSSLSSAQADFNQLAELDRQIKSFRVASNPYTWFTMEALEETWRNLQKIIKERELELQKEQRRQEENDKLRQEFAQHANAFHQWIQETRTYLLDGSCMVEESGTLESQLEATKRKHQEIRAMRSQLKKIEDLGAAMEEALILDNKYTEHSTVGLAQQWDQLDQLGMRMQHNLEQQIQARNTTGVTEEALKEFSMMFKHFDKDKSGRLNHQEFKSCLRSLGYDLPMVEEGEPDPEFESILDTVDPNRDGHVSLQEYMAFMISRETENVKSSEEIESAFRALSSERKPYVTKEELYQNLTREQADYCISHMKPYMDGKGRELPSAYDYIEFTRSLFVN",
    "sequence_length": 2477
  },
  "molecule_id": "P07751",
  "states": [
    {
      "assumptions": [],
      "basis": "observed",
      "description": "Native fold of the alpha-spectrin SH3 domain, as in 1SHG.",
      "family_label": null,
      "molecule_id": "P07751",
      "name": "native fold",
      "parent_state": null,
      "population": null,
      "provenance": {
        "deposit_id": null,
        "doi": null,
        "licence": "Project licence (pending decision)",
        "retrieved": "2026-10-19",
        "source": "Conformome curation (P07751.yaml)",
        "url": "https://github.com/matth55/conformome/blob/HEAD/curation/P07751.yaml"
      },
      "representative_model": "SH3-native-cif",
      "secondary_structure": null,
      "state_id": "SH3-native",
      "status": "draft"
    },
    {
      "assumptions": [
        "Treated as a single ensemble; residual structure and intermediates are not resolved.",
        "Defined by indirect measurements (denaturation, NMR of denatured samples, force spectroscopy); no model is exported."
      ],
      "basis": "inferred",
      "description": "Unfolded ensemble reached by denaturant, temperature or force. No observed structure.",
      "family_label": null,
      "molecule_id": "P07751",
      "name": "unfolded",
      "parent_state": null,
      "population": null,
      "provenance": {
        "deposit_id": null,
        "doi": null,
        "licence": "Project licence (pending decision)",
        "retrieved": "2026-10-19",
        "source": "Conformome curation (P07751.yaml)",
        "url": "https://github.com/matth55/conformome/blob/HEAD/curation/P07751.yaml"
      },
      "representative_model": null,
      "secondary_structure": null,
      "state_id": "SH3-unfolded",
      "status": "draft"
    }
  ],
  "transitions": []
}
