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            "assay_type": "X-ray structural association; no pharmacological activity assigned",
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            "audit_decision": "separate_whole_peptide_preparation_from_M3L_monomer",
            "baseline_assay_record": 1,
            "buffer": null,
            "ccd_id": "M3L",
            "ccd_mapping_source": null,
            "chemical_id": null,
            "chemical_identity_status": "defined_modified_peptide_sequence_not_monomer_identity",
            "component_context": "nonstandard_polymer_monomer",
            "compound_name": "H4K20me3 peptide / trimethyllysine monomer",
            "conditions": "{}",
            "crystallographic_component_ids": null,
            "domain": "PWWP",
            "domain_id": "UP:Q7Z4V5:PWWP1",
            "endpoint_label_status": null,
            "evidence_class": "structural_occupancy_association",
            "evidence_location": "Table 2; RCSB polymer entity 2",
            "evidence_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC3119473/",
            "gene": "HDGFL2",
            "interpretation": "Chain H is an 11-residue H4K20me3 peptide AKRHR(M3L)VLRDN. M3L is a modified polymer monomer, not a free drug. The modeled subset must be distinguished from the full deposited peptide.",
            "molecular_entity_type": "modified_histone_peptide",
            "numeric_transcription_status": "not_a_quantitative_affinity_record",
            "numeric_value_inferred_from_structure": 0,
            "pH": null,
            "pdb_id": "3QBY",
            "preparation_id": "PREP:H4K20me3_11mer",
            "protein_id": "UP:Q7Z4V5",
            "qualitative_result": null,
            "reference_id": "PMID:21720545",
            "remaining_uncertainty": "M3L has a polymer residue identity. 3QBY structural occupancy coexists with very weak unfittable solution affinity in Table 1.",
            "replicates": null,
            "role": "histone methyllysine surrogate/partially resolved peptide",
            "source_component_url": "https://data.rcsb.org/rest/v1/core/polymer_entity/3QBY/2",
            "source_id": "S07",
            "source_reported_uncertainty": null,
            "source_reported_units": null,
            "source_reported_value": null,
            "source_verification_scope": "local_primary_full_text_XML; Tables 1-2, crystallization methods and ligand Results inspected",
            "temperature_C": null,
            "uncertainty": null,
            "uncertainty_type": null,
            "uncertainty_uM": null,
            "unit_conversion": null,
            "units": null,
            "value": null,
            "value_operator": null,
            "value_uM": null,
            "verification_level": "primary_full_text_sections_verified"
          },
          "source_reported_uncertainty": null,
          "source_reported_units": null,
          "source_reported_value": null,
          "source_verification_scope": "local_primary_full_text_XML; Tables 1-2, crystallization methods and ligand Results inspected",
          "target_scope": "domain_specific",
          "temperature_C": null,
          "uncertainty": null,
          "uncertainty_type": null,
          "uncertainty_uM": null,
          "unit_conversion": null,
          "units": null,
          "value": null,
          "value_operator": null,
          "value_uM": null,
          "verification_level": "primary_full_text_sections_verified"
        },
        {
          "DMSO_percent": null,
          "abstract_reported_endpoint": null,
          "abstract_reported_method": null,
          "abstract_reported_units": null,
          "abstract_reported_value": null,
          "assay_construct_end": null,
          "assay_construct_start": null,
          "assay_record_id": "PWWP11:ASSAY:0010",
          "assay_type": "Fluorescence polarization binding",
          "assay_value_transferred_to_modeled_stereoisomers": 0,
          "audit_decision": null,
          "baseline_assay_record": 0,
          "buffer": null,
          "ccd_id": null,
          "ccd_mapping_source": null,
          "chemical_id": null,
          "chemical_identity_status": "defined_modified_peptide_sequence_not_monomer_identity",
          "component_context": null,
          "compound_id": "PREP:H4K20me3_11mer",
          "compound_name": "H4K20me3 peptide / trimethyllysine monomer",
          "conditions": "{\"sequence\": \"AKRHRK(me3)VLRDN\"}",
          "crystallographic_component_ids": null,
          "curation_version": "frozen-v1.2",
          "domain": "PWWP1",
          "domain_id": "UP:Q7Z4V5:PWWP1",
          "endpoint": "Qualitative / association",
          "endpoint_label_status": null,
          "evidence_class": "qualitative_weak_binding",
          "evidence_location": "Table 1 H4K20me3 / HDGF2 cell and footnote",
          "evidence_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC3119473/",
          "gene": "HDGFL2",
          "interpretation": "Solution binding cannot be quantified from this record; structural occupancy separately linked to 3QBY.",
          "is_measured": true,
          "is_negative": false,
          "method": "Fluorescence polarization binding",
          "molecular_entity_type": "modified_histone_peptide",
          "normalized_exact_uM": null,
          "numeric_transcription_status": "null_preserved_for_unfittable_binding",
          "numeric_value_inferred_from_structure": null,
          "organism": "Homo sapiens",
          "pH": null,
          "pdb_id": "3QBY",
          "preparation_id": "PREP:H4K20me3_11mer",
          "protein_id": "UP:Q7Z4V5",
          "publication_year": 2011,
          "qualitative_result": "Very weak; too weak to fit reliably",
          "reference_id": "PMID:21720545",
          "remaining_uncertainty": null,
          "replicates": null,
          "role": "histone_peptide_assay",
          "source_component_url": null,
          "source_database": "Primary literature (frozen Atlas)",
          "source_id": "S07",
          "source_measurement_key": "cf1c24ea381bee900d125513be012f98cdc2e554af2e1d7231b06e55656883cd",
          "source_original": {
            "DMSO_percent": null,
            "abstract_reported_endpoint": null,
            "abstract_reported_method": null,
            "abstract_reported_units": null,
            "abstract_reported_value": null,
            "assay_construct_end": null,
            "assay_construct_start": null,
            "assay_record_id": "PWWP11:ASSAY:0010",
            "assay_type": "Fluorescence polarization binding",
            "assay_value_transferred_to_modeled_stereoisomers": 0,
            "audit_decision": null,
            "baseline_assay_record": 0,
            "buffer": null,
            "ccd_id": null,
            "ccd_mapping_source": null,
            "chemical_id": null,
            "chemical_identity_status": "defined_modified_peptide_sequence_not_monomer_identity",
            "component_context": null,
            "compound_name": "H4K20me3 peptide / trimethyllysine monomer",
            "conditions": "{\"sequence\": \"AKRHRK(me3)VLRDN\"}",
            "crystallographic_component_ids": null,
            "domain": "PWWP1",
            "domain_id": "UP:Q7Z4V5:PWWP1",
            "endpoint_label_status": null,
            "evidence_class": "qualitative_weak_binding",
            "evidence_location": "Table 1 H4K20me3 / HDGF2 cell and footnote",
            "evidence_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC3119473/",
            "gene": "HDGFL2",
            "interpretation": "Solution binding cannot be quantified from this record; structural occupancy separately linked to 3QBY.",
            "molecular_entity_type": "modified_histone_peptide",
            "numeric_transcription_status": "null_preserved_for_unfittable_binding",
            "numeric_value_inferred_from_structure": null,
            "pH": null,
            "pdb_id": "3QBY",
            "preparation_id": "PREP:H4K20me3_11mer",
            "protein_id": "UP:Q7Z4V5",
            "qualitative_result": "Very weak; too weak to fit reliably",
            "reference_id": "PMID:21720545",
            "remaining_uncertainty": null,
            "replicates": null,
            "role": "histone_peptide_assay",
            "source_component_url": null,
            "source_id": "S07",
            "source_reported_uncertainty": null,
            "source_reported_units": null,
            "source_reported_value": null,
            "source_verification_scope": "local_primary_full_text_XML_table_verified",
            "temperature_C": null,
            "uncertainty": null,
            "uncertainty_type": null,
            "uncertainty_uM": null,
            "unit_conversion": null,
            "units": null,
            "value": null,
            "value_operator": null,
            "value_uM": null,
            "verification_level": null
          },
          "source_reported_uncertainty": null,
          "source_reported_units": null,
          "source_reported_value": null,
          "source_verification_scope": "local_primary_full_text_XML_table_verified",
          "target_scope": "domain_specific",
          "temperature_C": null,
          "uncertainty": null,
          "uncertainty_type": null,
          "uncertainty_uM": null,
          "unit_conversion": null,
          "units": null,
          "value": null,
          "value_operator": null,
          "value_uM": null,
          "verification_level": null
        }
      ],
      "matched_assay_count": 2
    }
  ]
}