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    },
    {
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        ],
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      "technique": "cryoem",
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      },
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      "technique": "cryoem",
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      },
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      "technique": "cryoem",
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        "temperature_c": null
      },
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      },
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        "temperature_c": null
      },
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      "technique": "cryoem",
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      },
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        "url": "https://www.rcsb.org/structure/7S4U"
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      },
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      },
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        "url": "https://www.rcsb.org/structure/7S37"
      },
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      "source_kind": "deposit",
      "technique": "cryoem",
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    },
    {
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        "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains P)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/7S36",
      "evidence_id": "EV-PDB-7S36-2",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.2
      },
      "provenance": {
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/7S36"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Cas9:sgRNA:DNA (S. pyogenes) with 0 RNA:DNA base pairs, closed-protein/bent-DNA conformation"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "K",
          "MG"
        ],
        "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains B)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/7QR8",
      "evidence_id": "EV-PDB-7QR8-2",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.75
      },
      "provenance": {
        "deposit_id": "7QR8",
        "doi": "10.1016/j.cell.2022.09.026",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/7QR8"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "SpCas9 bound to PTPRC off-target1 DNA substrate"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "K",
          "MG"
        ],
        "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains B)",
        "labels": []
      },
      "data_format": "mmCIF + structure factors",
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      "evidence_id": "EV-PDB-7QR0-2",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "unit": "Å",
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      },
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        "doi": "10.1016/j.cell.2022.09.026",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/7QR0"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "xray",
      "title": "SpCas9 bound to TRAC off-target1 DNA substrate"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "MG"
        ],
        "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
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      "evidence_id": "EV-PDB-8U3Y-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "unit": "Å",
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      },
      "provenance": {
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        "doi": "10.1038/s41467-024-47830-3",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8U3Y"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpG Cas9 with NGG PAM DNA target"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8WUS",
      "evidence_id": "EV-PDB-8WUS-2",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "uncertainty": null,
        "unit": "Å",
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      },
      "provenance": {
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        "doi": "10.1038/s41586-024-07497-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8WUS"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9-MMLV RT-pegRNA-target DNA complex (termination)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
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      "evidence_id": "EV-PDB-8WUV-3",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
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      },
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        "deposit_id": "8WUV",
        "doi": "10.1038/s41586-024-07497-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8WUV"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9-MMLV RT-pegRNA-target DNA complex (elongation 16-nt)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9CGU",
      "evidence_id": "EV-PDB-9CGU-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.0
      },
      "provenance": {
        "deposit_id": "9CGU",
        "doi": "10.1093/nar/gkae1164",
        "licence": "CC0 1.0 (wwPDB archive data)",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9CGU"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Cas9 ternary complex, 14-nt sgRNA, State II (kinked)"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [
          "MG"
        ],
        "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EAK",
      "evidence_id": "EV-PDB-9EAK-4",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.76
      },
      "provenance": {
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        "doi": "10.1038/s41467-025-60668-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EAK"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State I - pre-activation)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
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      "evidence_id": "EV-PDB-9EAL-4",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "uncertainty": null,
        "unit": "Å",
        "value": 2.83
      },
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        "doi": "10.1038/s41467-025-60668-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EAL"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State II - precleavage)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
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      "data_level": "processed",
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      "evidence_id": "EV-PDB-9ED9-5",
      "mappings": [],
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        "unit": "Å",
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      },
      "provenance": {
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        "doi": "10.1038/s41467-025-60668-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9ED9"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State III - checkpoint)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EDA",
      "evidence_id": "EV-PDB-9EDA-5",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "uncertainty": null,
        "unit": "Å",
        "value": 2.88
      },
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        "doi": "10.1038/s41467-025-60668-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EDA"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State IV - product)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9H4L",
      "evidence_id": "EV-PDB-9H4L-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.9
      },
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        "deposit_id": "9H4L",
        "doi": "10.1038/s41586-026-10255-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9H4L"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "dCas9 bound to off-target 2 EMX1-1 (-)SC DNA minicircle"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9H4M",
      "evidence_id": "EV-PDB-9H4M-4",
      "mappings": [],
      "molecule_id": "Q99ZW2",
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        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.8
      },
      "provenance": {
        "deposit_id": "9H4M",
        "doi": "10.1038/s41586-026-10255-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9H4M"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "wtCas9 bound to off-target 1 EMX1-1 (-)SC DNA minicircle"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9JL4",
      "evidence_id": "EV-PDB-9JL4-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 4.0
      },
      "provenance": {
        "deposit_id": "9JL4",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9JL4"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Apo-spCas9 conformation"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9K4C",
      "evidence_id": "EV-PDB-9K4C-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.84
      },
      "provenance": {
        "deposit_id": "9K4C",
        "doi": "10.1038/s41594-026-01753-3",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9K4C"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SuperFi Cas9 - 22nt sgRNA - DNA ternary 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": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9K4E",
      "evidence_id": "EV-PDB-9K4E-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.3
      },
      "provenance": {
        "deposit_id": "9K4E",
        "doi": "10.1038/s41594-026-01753-3",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9K4E"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SuperFi Cas9 - mismatch 22nt sgRNA - DNA ternary complex class1"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains C)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9LKJ",
      "evidence_id": "EV-PDB-9LKJ-2",
      "mappings": [],
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        "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9H4K",
      "evidence_id": "EV-PDB-9H4K-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.6
      },
      "provenance": {
        "deposit_id": "9H4K",
        "doi": "10.1038/s41586-026-10255-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9H4K"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "dCas9 bound to off-target 1 EMX1-1 (-)SC DNA minicircle"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9H4J",
      "evidence_id": "EV-PDB-9H4J-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.1
      },
      "provenance": {
        "deposit_id": "9H4J",
        "doi": "10.1038/s41586-026-10255-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9H4J"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "dCas9 bound to on-target EMX1-1 (-)SC DNA minicircle"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9EDB",
      "evidence_id": "EV-PDB-9EDB-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.1
      },
      "provenance": {
        "deposit_id": "9EDB",
        "doi": "10.1038/s41467-025-60668-7",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9EDB"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State V - dissociated)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9C9P",
      "evidence_id": "EV-PDB-9C9P-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.1
      },
      "provenance": {
        "deposit_id": "9C9P",
        "doi": "10.1093/nar/gkae1164",
        "licence": "CC0 1.0 (wwPDB archive data)",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9C9P"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Cas9 ternary complex, 14-nt sgRNA, State I (linear)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains P)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/9B2K",
      "evidence_id": "EV-PDB-9B2K-3",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.67
      },
      "provenance": {
        "deposit_id": "9B2K",
        "doi": null,
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/9B2K"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9 with dual-guide RNA in open conformation"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains X)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8YNY",
      "evidence_id": "EV-PDB-8YNY-9",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 4.52
      },
      "provenance": {
        "deposit_id": "8YNY",
        "doi": "10.1038/s41467-024-54768-z",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8YNY"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Structure of Cas9-sgRNA ribonucleoprotein bound to nucleosome"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8YGJ",
      "evidence_id": "EV-PDB-8YGJ-6",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.2
      },
      "provenance": {
        "deposit_id": "8YGJ",
        "doi": "10.1038/s41586-024-07497-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8YGJ"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9-MMLV RT-pegRNA-target DNA complex (elongation 28-nt)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8YE9",
      "evidence_id": "EV-PDB-8YE9-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.43
      },
      "provenance": {
        "deposit_id": "8YE9",
        "doi": "10.1007/s11427-024-2607-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8YE9"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Cryo-EM structure of Cas9-sgRNA-A25 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": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8YE6",
      "evidence_id": "EV-PDB-8YE6-2",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 2.95
      },
      "provenance": {
        "deposit_id": "8YE6",
        "doi": "10.1007/s11427-024-2607-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8YE6"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "Cryo-EM structure of Cas9-sgRNA-A32 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": null,
        "salt_mM": null,
        "temperature_c": null
      },
      "construct": {
        "description": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8WUU",
      "evidence_id": "EV-PDB-8WUU-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.2
      },
      "provenance": {
        "deposit_id": "8WUU",
        "doi": "10.1038/s41586-024-07497-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
        "retrieved": "2026-10-19",
        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8WUU"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9-pegRNA-target DNA complex (pre-initiation)"
    },
    {
      "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": "CRISPR-associated endonuclease Cas9/Csn1 (chains A)",
        "labels": []
      },
      "data_format": "mmCIF + EMDB map",
      "data_level": "processed",
      "data_link": "https://www.rcsb.org/structure/8WUT",
      "evidence_id": "EV-PDB-8WUT-1",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "resolution",
        "uncertainty": null,
        "unit": "Å",
        "value": 3.0
      },
      "provenance": {
        "deposit_id": "8WUT",
        "doi": "10.1038/s41586-024-07497-8",
        "licence": "CC0 1.0 (wwPDB archive data)",
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        "source": "RCSB PDB",
        "url": "https://www.rcsb.org/structure/8WUT"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "cryoem",
      "title": "SpCas9-MMLV RT-pegRNA-target DNA complex (initiation)"
    },
    {
      "conditions": {
        "applied_force_pn": null,
        "buffer": null,
        "environment": "in_vitro",
        "ions": [],
        "ligands": [],
        "notes": "From the first sample condition list of the entry.",
        "ph": 7.4,
        "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=27949",
      "evidence_id": "EV-BMRB-27949",
      "mappings": [],
      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "chemical_shift",
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        "unit": null,
        "value": null
      },
      "provenance": {
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        "doi": "10.13018/BMR27949",
        "licence": "CC0 1.0 (verify)",
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        "source": "BMRB",
        "url": "https://bmrb.io/data_library/summary/index.php?bmrbId=27949"
      },
      "reader": null,
      "source_kind": "deposit",
      "technique": "nmr_shifts",
      "title": "1H, 13C, 15N Backbone and Sidechain Assignments of HNH from SpyCas9"
    },
    {
      "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 1-1368",
        "labels": []
      },
      "data_format": "mmCIF, PAE JSON",
      "data_level": "processed",
      "data_link": "https://alphafold.ebi.ac.uk/entry/Q99ZW2",
      "evidence_id": "EV-AFDB-AF-Q99ZW2-F1",
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      "molecule_id": "Q99ZW2",
      "observable": {
        "type": "plddt",
        "uncertainty": null,
        "unit": "pLDDT",
        "value": 88.38
      },
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        "doi": null,
        "licence": "CC BY 4.0",
        "retrieved": "2026-10-19",
        "source": "AlphaFold DB",
        "url": "https://alphafold.ebi.ac.uk/entry/Q99ZW2"
      },
      "reader": null,
      "source_kind": "computed",
      "technique": "af_prediction",
      "title": "AlphaFold DB prediction AF-Q99ZW2-F1"
    }
  ],
  "models": [],
  "molecule": {
    "components": [],
    "domains": [
      {
        "end": 921,
        "name": "HNH Cas9-type",
        "start": 770
      }
    ],
    "gene": "cas9",
    "identifiers": {
      "genbank": null,
      "isoform": null,
      "nakb": null,
      "pdb": [],
      "rfam": null,
      "rnacentral": null,
      "uniprot": "Q99ZW2"
    },
    "ligands": [
      "Mn(2+)"
    ],
    "modifications": [],
    "molecule_id": "Q99ZW2",
    "molecule_type": "protein",
    "name": "CRISPR-associated endonuclease Cas9/Csn1",
    "organism": {
      "name": "Streptococcus pyogenes serotype M1",
      "taxon_id": 301447
    },
    "provenance": {
      "deposit_id": "Q99ZW2",
      "doi": null,
      "licence": "CC BY 4.0 (UniProt)",
      "retrieved": "2026-10-19",
      "source": "UniProtKB",
      "url": "https://www.uniprot.org/uniprotkb/Q99ZW2/entry"
    },
    "sequence": "MDKKYSIGLDIGTNSVGWAVITDEYKVPSKKFKVLGNTDRHSIKKNLIGALLFDSGETAEATRLKRTARRRYTRRKNRICYLQEIFSNEMAKVDDSFFHRLEESFLVEEDKKHERHPIFGNIVDEVAYHEKYPTIYHLRKKLVDSTDKADLRLIYLALAHMIKFRGHFLIEGDLNPDNSDVDKLFIQLVQTYNQLFEENPINASGVDAKAILSARLSKSRRLENLIAQLPGEKKNGLFGNLIALSLGLTPNFKSNFDLAEDAKLQLSKDTYDDDLDNLLAQIGDQYADLFLAAKNLSDAILLSDILRVNTEITKAPLSASMIKRYDEHHQDLTLLKALVRQQLPEKYKEIFFDQSKNGYAGYIDGGASQEEFYKFIKPILEKMDGTEELLVKLNREDLLRKQRTFDNGSIPHQIHLGELHAILRRQEDFYPFLKDNREKIEKILTFRIPYYVGPLARGNSRFAWMTRKSEETITPWNFEEVVDKGASAQSFIERMTNFDKNLPNEKVLPKHSLLYEYFTVYNELTKVKYVTEGMRKPAFLSGEQKKAIVDLLFKTNRKVTVKQLKEDYFKKIECFDSVEISGVEDRFNASLGTYHDLLKIIKDKDFLDNEENEDILEDIVLTLTLFEDREMIEERLKTYAHLFDDKVMKQLKRRRYTGWGRLSRKLINGIRDKQSGKTILDFLKSDGFANRNFMQLIHDDSLTFKEDIQKAQVSGQGDSLHEHIANLAGSPAIKKGILQTVKVVDELVKVMGRHKPENIVIEMARENQTTQKGQKNSRERMKRIEEGIKELGSQILKEHPVENTQLQNEKLYLYYLQNGRDMYVDQELDINRLSDYDVDHIVPQSFLKDDSIDNKVLTRSDKNRGKSDNVPSEEVVKKMKNYWRQLLNAKLITQRKFDNLTKAERGGLSELDKAGFIKRQLVETRQITKHVAQILDSRMNTKYDENDKLIREVKVITLKSKLVSDFRKDFQFYKVREINNYHHAHDAYLNAVVGTALIKKYPKLESEFVYGDYKVYDVRKMIAKSEQEIGKATAKYFFYSNIMNFFKTEITLANGEIRKRPLIETNGETGEIVWDKGRDFATVRKVLSMPQVNIVKKTEVQTGGFSKESILPKRNSDKLIARKKDWDPKKYGGFDSPTVAYSVLVVAKVEKGKSKKLKSVKELLGITIMERSSFEKNPIDFLEAKGYKEVKKDLIIKLPKYSLFELENGRKRMLASAGELQKGNELALPSKYVNFLYLASHYEKLKGSPEDNEQKQLFVEQHKHYLDEIIEQISEFSKRVILADANLDKVLSAYNKHRDKPIREQAENIIHLFTLTNLGAPAAFKYFDTTIDRKRYTSTKEVLDATLIHQSITGLYETRIDLSQLGGD",
    "sequence_length": 1368
  },
  "molecule_id": "Q99ZW2",
  "states": [],
  "transitions": []
}
