{
  "science_site": null,
  "structure": {
    "pdb_id": "9XYC",
    "title": "Pol II-DSIF-SPT6-PAF1c-TFIIS-IWS1-ELOF1-LEDGF-nucleosome LEDGF+nucleosome map Q",
    "method": "[\"ELECTRON MICROSCOPY\"]",
    "resolution_angstrom": 3.5,
    "primary_classification": "Complexes",
    "observed_PWWP": 1,
    "review_required": 0,
    "review_reasons": "[]",
    "release_date": "2026-03-18T00:00:00.000+00:00",
    "source_url": "https://www.rcsb.org/structure/9XYC",
    "coordinate_url": "https://files.rcsb.org/download/9XYC.cif",
    "original_cif_sha256": "e99136caa5ab3f02f9aee8cb43c01999133a63a2fd5b7e150f827f06d67580eb",
    "classification_status": "v1 classification retained; independent coverage/contact evidence and sampled scientific audit are separate layers"
  },
  "chains": [
    {
      "auth_asym_ids_observed": "[\"l\"]",
      "broader_scope_basis": "source Pfam feature intersecting native core; entire chain reported separately",
      "chain_id": "PDB:9XYC:CHAIN:K:UP:O75475",
      "core_definition_source": "UniProtKB reviewed feature",
      "domain_id": "UP:O75475:PWWP1",
      "entity_id": "7",
      "gene": "PSIP1",
      "isolated_PWWP_containing_construct_candidate": 0,
      "label_asym_id": "K",
      "mapped_construct_ranges": "[[2, 530]]",
      "native_core_end": 64,
      "native_core_start": 1,
      "observed_chain_residue_count": 86,
      "observed_core_residue_count": 58,
      "pdb_id": "9XYC",
      "pfam_entity_ranges": "[]",
      "protein_id": "UP:O75475",
      "source_entity_json": "Structures/PSIP1__HUMAN__O75475/Complexes/9XYC/polymer_entities.json",
      "source_entity_json_sha256": "c9a7383394edb16550ea5a514a838a0a75fab335bbb5c0714047745a3c6aec86"
    }
  ],
  "chain": {
    "auth_asym_ids_observed": "[\"l\"]",
    "broader_scope_basis": "source Pfam feature intersecting native core; entire chain reported separately",
    "chain_id": "PDB:9XYC:CHAIN:K:UP:O75475",
    "core_definition_source": "UniProtKB reviewed feature",
    "domain_id": "UP:O75475:PWWP1",
    "entity_id": "7",
    "gene": "PSIP1",
    "isolated_PWWP_containing_construct_candidate": 0,
    "label_asym_id": "K",
    "mapped_construct_ranges": "[[2, 530]]",
    "native_core_end": 64,
    "native_core_start": 1,
    "observed_chain_residue_count": 86,
    "observed_core_residue_count": 58,
    "pdb_id": "9XYC",
    "pfam_entity_ranges": "[]",
    "protein_id": "UP:O75475",
    "source_entity_json": "Structures/PSIP1__HUMAN__O75475/Complexes/9XYC/polymer_entities.json",
    "source_entity_json_sha256": "c9a7383394edb16550ea5a514a838a0a75fab335bbb5c0714047745a3c6aec86"
  },
  "sites": [],
  "site": null,
  "quality": null,
  "contacts": [],
  "comparison": {
    "comparison_id": "9XYC:K:UP:O75475:PWWP1",
    "pdb_id": "9XYC",
    "protein_id": "UP:O75475",
    "gene": "PSIP1",
    "taxonomy_id": "9606",
    "domain_id": "UP:O75475:PWWP1",
    "label_asym_id": "K",
    "auth_asym_ids": "[\"l\"]",
    "first_model": "1",
    "domain_start": 1,
    "domain_end": 64,
    "annotation_core_length": 64,
    "n_observed_CA": 58,
    "core_CA_coverage": 0.90625,
    "v1_observed_any_atom_residues": 58,
    "CA_minus_v1_any_atom": 0,
    "n_common_AF_CA": 58,
    "core_observed_substitutions": 0,
    "substitutions": "[]",
    "duplicate_canonical_positions": "[]",
    "experimental_method": "ELECTRON MICROSCOPY",
    "resolution_angstrom": 3.5,
    "primary_classification": "Complexes",
    "classification_review_required": 0,
    "source_cif": "Structures/PSIP1__HUMAN__O75475/Complexes/9XYC/original.cif",
    "source_sha256": "e99136caa5ab3f02f9aee8cb43c01999133a63a2fd5b7e150f827f06d67580eb",
    "mapping_sha256": "510c952b2765319251736514dca7963e5a7c5dc9f1d5fdef27eb252570917dcc",
    "comparison_status": "eligible",
    "AF_model_record_id": "AF-O75475-F1:v6",
    "rmsd_all_common_CA": 2.264843,
    "n_AF_CA_ge70": 54,
    "rmsd_AF_ge70_CA": 1.919772,
    "AF_core_mean_plddt": 91.6498
  },
  "assays": [],
  "local_coordinates": true,
  "coordinate_url": "/coordinates/phase6c1/9XYC.cif",
  "interpretation": "Heavy-atom distances use the first deposited model and asymmetric unit, occupancy >0 and retained alternate locations. No symmetry expansion or affinity inference.",
  "quality_scope": "Detailed atom completeness only for the three packaged original-coordinate files; quality uses observed atom-name union across positive-occupancy alternate conformers, with per-alt differences retained. Missing entire residues are separate. Nonstandard amino-acid templates are unassessed. No density reinterpretation, receptor repair, docking or MD.",
  "analysis_id": "PWWP_POCKET_QUALITY_1.0.0",
  "source_conflict": null
}