{"schema_version":"1.0","pdb_id":"2QZH","generated_at":"2026-09-02T21:20:42Z","status":"complete","coordinate_system":{"reference":"PDB_INSTANCE","index_base":1,"end_inclusive":true},"sources":{"sequence_coordinates_api":"https://sequence-coordinates.rcsb.org/graphql","annotation_collections":["UNIPROT","PDB_ENTITY","PDB_INSTANCE","PDB_INTERFACE"]},"chains":[{"instance_id":"2QZH.A","entity_id":"1","label_asym_id":"A","auth_asym_id":"A","description":"Complement decay-accelerating factor","polymer_type":"polypeptide(L)","sequence":{"value":"FRSCEVPTRLNSASLKQPYITQNYFPVGTVVEYECRPGYRREPSLSPKLTCLQNLKWSTAVEFCKKKSCPNPGEIRNGQIDVPGGILFGATISFSCNTGYKLFGSTSSFCLISGSSVQWSDPLPECREH","length":129},"alignments":[{"source":"UNIPROT","target_id":"P08174","target_sequence":"MTVARPSVPAALPLLGELPRLLLLVLLCLPAVWGDCGLPPDVPNAQPALEGRTSFPEDTVITYKCEESFVKIPGEKDSVICLKGSQWSDIEEFCNRSCEVPTRLNSASLKQPYITQNYFPVGTVVEYECRPGYRREPSLSPKLTCLQNLKWSTAVEFCKKKSCPNPGEIRNGQIDVPGGILFGATISFSCNTGYKLFGSTSSFCLISGSSVQWSDPLPECREIYCPAPPQIDNGIIQGERDHYGYRQSVTYACNKGFTMIGEHSIYCTVNNDEGEWSGPPPECRGKSLTSKVPPTVQKPTTVNVPTTEVSPTSQKTTTKTTTPNAQATRSTPVSRTTKHFHETTPNKGSGTTSGTTRLLSGHTCFTLTGLLGTLVTMGLLT","query_coverage":0.9844961240310077,"query_length":129,"target_coverage":0.3333333333333333,"target_length":381,"orientation":null,"regions":[{"query_begin":2,"query_end":128,"target_begin":96,"target_end":222,"exon_shift":null}]}],"tracks":[{"key":"secondary_structure","label":"SECONDARY STRUCTURE","kind":"range","features":[{"begin":13,"end":15,"feature_id":"A","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":13,"original_end":15},{"begin":29,"end":31,"feature_id":"B","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":29,"original_end":31},{"begin":33,"end":35,"feature_id":"A","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":33,"original_end":35},{"begin":49,"end":51,"feature_id":"B","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":49,"original_end":51},{"begin":78,"end":81,"feature_id":"C","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":78,"original_end":81},{"begin":91,"end":96,"feature_id":"C","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":91,"original_end":96},{"begin":100,"end":102,"feature_id":"D","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":100,"original_end":102},{"begin":108,"end":111,"feature_id":"C","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":108,"original_end":111},{"begin":118,"end":119,"feature_id":"C","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":118,"original_end":119},{"begin":126,"end":128,"feature_id":"D","type":"SHEET","name":"sheet","description":"anti-parallel sense sheet","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PROMOTIF","original_begin":126,"original_end":128}]},{"key":"atomic_clashes","label":"ATOMIC CLASHES","kind":"numeric_series","features":[{"begin":17,"end":17,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":17,"original_end":null,"values":[1.0]},{"begin":19,"end":20,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":19,"original_end":null,"values":[1.0,1.0]},{"begin":22,"end":22,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":22,"original_end":null,"values":[1.0]},{"begin":28,"end":28,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":28,"original_end":null,"values":[1.0]},{"begin":38,"end":38,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":38,"original_end":null,"values":[1.0]},{"begin":40,"end":42,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":40,"original_end":null,"values":[1.0,1.0,4.0]},{"begin":44,"end":44,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":44,"original_end":null,"values":[3.0]},{"begin":51,"end":51,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":51,"original_end":null,"values":[1.0]},{"begin":54,"end":56,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":54,"original_end":null,"values":[2.0,1.0,1.0]},{"begin":65,"end":65,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":65,"original_end":null,"values":[1.0]},{"begin":67,"end":67,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":67,"original_end":null,"values":[1.0]},{"begin":71,"end":71,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":71,"original_end":null,"values":[1.0]},{"begin":73,"end":73,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":73,"original_end":null,"values":[1.0]},{"begin":82,"end":82,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":82,"original_end":null,"values":[1.0]},{"begin":84,"end":84,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":84,"original_end":null,"values":[1.0]},{"begin":122,"end":123,"feature_id":"CLASHES","type":"CLASHES","name":"CLASHES","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":122,"original_end":null,"values":[1.0,1.0]}]},{"key":"q_score","label":"Q-SCORE","kind":"numeric_series","features":[{"begin":1,"end":129,"feature_id":"Q_SCORE","type":"Q_SCORE","name":"Q_SCORE","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":1,"original_end":null,"values":[0.279,0.19,0.084,0.054,0.074,0.216,0.091,0.055,0.146,-0.019,0.071,-0.041,0.103,0.143,0.196,0.082,0.059,0.082,-0.164,-0.043,0.146,-0.086,0.047,0.007,0.136,0.398,0.231,0.13,0.122,0.187,0.045,0.161,0.389,0.347,0.075,0.129,0.132,0.084,0.151,0.103,-0.015,0.056,0.098,-0.056,0.057,0.104,-0.022,0.182,0.057,0.153,-0.055,0.043,0.008,0.103,-0.127,0.127,-0.063,0.041,0.019,0.025,0.037,0.023,-0.127,0.08,0.072,0.161,0.072,0.236,0.144,0.072,0.099,0.01,0.144,0.127,0.174,0.229,0.213,0.185,0.043,0.054,0.057,0.015,0.125,0.017,-0.026,-0.069,0.05,0.037,0.1,-0.012,0.004,-0.017,0.066,0.06,0.165,0.069,0.067,0.144,0.08,0.111,-0.001,0.107,-0.133,-0.049,-0.063,0.133,0.011,0.035,0.115,0.078,0.087,-0.006,0.049,0.052,-0.018,0.099,0.079,0.176,0.091,0.117,0.108,0.124,0.059,0.085,0.142,0.182,0.299,0.23,0.207]}]},{"key":"hydropathy","label":"HYDROPATHY","kind":"numeric_series","features":[{"begin":5,"end":125,"feature_id":null,"type":"HYDROPATHY","name":"Hydropathy values","description":null,"value":null,"source":"PDB_ENTITY","source_id":"2QZH_1","provenance_source":"biojava-7.2.4","original_begin":5,"original_end":null,"values":[-0.68,-0.57,-0.46,-0.46,-0.53,-0.23,-0.28,-0.53,-0.84,-0.52,-1.09,-0.2,-0.19,-0.78,-1.08,-1.64,-0.9,-0.69,-0.04,0.06,-0.52,0.02,0.88,0.88,0.88,0.18,0.63,-0.33,-0.47,-0.43,-1.04,-2.01,-2.12,-2.37,-2.16,-2.52,-1.6,-1.51,-1.64,-1.93,-1.01,-0.59,0.08,0.68,0.38,-0.43,0.08,-0.18,0.16,-0.36,-0.36,-0.43,-0.39,-0.39,0.31,0.17,0.17,-0.17,-0.51,-0.52,-0.44,-1.09,-1.09,-1.58,-1.9,-1.86,-0.92,-0.99,-1.29,-1.61,-1.82,-0.93,-1.14,-0.63,-0.42,-0.97,-0.51,0.38,0.84,1.54,1.0,1.59,1.04,1.72,1.68,2.03,1.44,1.3,0.6,0.57,0.32,0.26,-0.68,-0.17,-0.17,-0.12,-0.49,-0.18,-0.19,-0.23,0.22,0.93,0.93,1.12,1.08,1.12,1.11,1.11,1.67,0.97,0.59,0.08,-0.81,-0.9,-0.43,-0.52,-0.82,-1.01,-1.12,-1.41,-1.68]}]},{"key":"disorder","label":"DISORDER","kind":"numeric_series","features":[{"begin":1,"end":129,"feature_id":null,"type":"DISORDER","name":"Disordered regions","description":null,"value":null,"source":"PDB_ENTITY","source_id":"2QZH_1","provenance_source":"IUPred2(short)","original_begin":1,"original_end":null,"values":[0.82,0.78,0.71,0.67,0.57,0.53,0.49,0.47,0.37,0.26,0.22,0.31,0.31,0.25,0.24,0.26,0.27,0.24,0.25,0.2,0.21,0.21,0.15,0.18,0.12,0.16,0.18,0.18,0.11,0.15,0.2,0.2,0.21,0.21,0.2,0.28,0.27,0.33,0.27,0.27,0.21,0.22,0.22,0.29,0.23,0.31,0.24,0.23,0.23,0.27,0.23,0.23,0.16,0.08,0.08,0.12,0.12,0.11,0.06,0.1,0.09,0.2,0.24,0.24,0.18,0.24,0.24,0.31,0.31,0.24,0.27,0.26,0.28,0.35,0.44,0.38,0.32,0.25,0.24,0.31,0.27,0.21,0.19,0.13,0.12,0.11,0.1,0.1,0.11,0.06,0.09,0.05,0.05,0.04,0.04,0.04,0.05,0.08,0.08,0.04,0.03,0.02,0.04,0.04,0.06,0.06,0.06,0.07,0.05,0.05,0.08,0.1,0.1,0.17,0.18,0.12,0.12,0.13,0.12,0.22,0.37,0.49,0.58,0.63,0.68,0.72,0.76,0.85,0.87]}]},{"key":"disordered_binding","label":"DISORDERED BINDING","kind":"numeric_series","features":[{"begin":1,"end":129,"feature_id":null,"type":"DISORDER_BINDING","name":"Disordered binding sites","description":null,"value":null,"source":"PDB_ENTITY","source_id":"2QZH_1","provenance_source":"Anchor2","original_begin":1,"original_end":null,"values":[0.28,0.27,0.26,0.26,0.27,0.28,0.29,0.3,0.31,0.32,0.32,0.32,0.33,0.34,0.36,0.35,0.35,0.36,0.37,0.37,0.37,0.38,0.39,0.41,0.4,0.37,0.35,0.32,0.3,0.28,0.25,0.22,0.19,0.16,0.14,0.14,0.15,0.16,0.18,0.19,0.19,0.2,0.21,0.23,0.25,0.26,0.26,0.26,0.27,0.26,0.26,0.28,0.3,0.3,0.3,0.29,0.29,0.27,0.23,0.19,0.16,0.13,0.1,0.07,0.06,0.05,0.04,0.03,0.03,0.03,0.04,0.05,0.06,0.08,0.1,0.12,0.15,0.19,0.24,0.3,0.33,0.36,0.38,0.42,0.42,0.42,0.43,0.42,0.36,0.32,0.27,0.24,0.22,0.2,0.17,0.14,0.14,0.14,0.16,0.16,0.18,0.2,0.21,0.21,0.2,0.2,0.21,0.2,0.21,0.19,0.2,0.21,0.2,0.2,0.21,0.21,0.21,0.2,0.2,0.17,0.15,0.12,0.1,0.08,0.08,0.07,0.06,0.06,0.05]}]},{"key":"pfam","label":"PFAM","kind":"range","features":[{"begin":4,"end":64,"feature_id":"PF00084","type":"PFAM","name":"Sushi repeat (SCR repeat) (Sushi)","description":null,"value":null,"source":"PDB_ENTITY","source_id":"2QZH_1","provenance_source":"Pfam","original_begin":4,"original_end":64},{"begin":69,"end":126,"feature_id":"PF00084","type":"PFAM","name":"Sushi repeat (SCR repeat) (Sushi)","description":null,"value":null,"source":"PDB_ENTITY","source_id":"2QZH_1","provenance_source":"Pfam","original_begin":69,"original_end":126}]},{"key":"scop","label":"SCOP","kind":"range","features":[{"begin":1,"end":1,"feature_id":"d2qzha2","type":"SCOP","name":"N-terminal Tags","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"SCOPe","original_begin":1,"original_end":1},{"begin":2,"end":67,"feature_id":"d2qzha1","type":"SCOP","name":"Complement decay-accelerating factor (Daf, CD55)","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"SCOPe","original_begin":2,"original_end":67},{"begin":67,"end":128,"feature_id":"8044483","type":"SCOP_2_B_SUPERFAMILY","name":"Sushi/CCP/SCR domain","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"SCOP2B","original_begin":67,"original_end":128},{"begin":129,"end":129,"feature_id":"d2qzha3","type":"SCOP","name":"C-terminal Tags","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"SCOPe","original_begin":129,"original_end":129}]},{"key":"ecod","label":"ECOD","kind":"range","features":[{"begin":3,"end":66,"feature_id":"e2qzhA1","type":"ECOD","name":null,"description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"ECOD","original_begin":3,"original_end":66},{"begin":67,"end":129,"feature_id":"e2qzhA2","type":"ECOD","name":"Rpf1_C","description":null,"value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"ECOD","original_begin":67,"original_end":129}]},{"key":"molecule_processing","label":"MOLECULE PROCESSING","kind":"range","features":[{"begin":2,"end":128,"feature_id":"PRO_0000006000","type":"CHAIN","name":null,"description":"Complement decay-accelerating factor","value":null,"source":"UNIPROT","source_id":"P08174","provenance_source":null,"original_begin":96,"original_end":222}]},{"key":"other_domain","label":"DOMAIN","kind":"range","features":[{"begin":2,"end":2,"feature_id":null,"type":"DOMAIN","name":null,"description":"Sushi 1","value":null,"source":"UNIPROT","source_id":"P08174","provenance_source":null,"original_begin":96,"original_end":96},{"begin":2,"end":66,"feature_id":null,"type":"DOMAIN","name":null,"description":"Sushi 2","value":null,"source":"UNIPROT","source_id":"P08174","provenance_source":null,"original_begin":96,"original_end":160},{"begin":67,"end":128,"feature_id":null,"type":"DOMAIN","name":null,"description":"Sushi 3","value":null,"source":"UNIPROT","source_id":"P08174","provenance_source":null,"original_begin":161,"original_end":222}]},{"key":"other_sequence_conflict","label":"SEQUENCE_CONFLICT","kind":"point","features":[{"begin":93,"end":93,"feature_id":null,"type":"SEQUENCE_CONFLICT","name":null,"description":"In Ref. 10; AAB48622.","value":null,"source":"UNIPROT","source_id":"P08174","provenance_source":null,"original_begin":187,"original_end":187}]},{"key":"other_sequence_variant","label":"SEQUENCE_VARIANT","kind":"point","features":[{"begin":105,"end":105,"feature_id":"VAR_002000","type":"SEQUENCE_VARIANT","name":null,"description":"In Dr(a-) antigen; dbSNP:rs1135402914.","value":null,"source":"UNIPROT","source_id":"P08174","provenance_source":null,"original_begin":199,"original_end":199}]},{"key":"other_unobserved_atom_xyz","label":"UNOBSERVED_ATOM_XYZ","kind":"range","features":[{"begin":1,"end":27,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":1,"original_end":27},{"begin":29,"end":37,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":29,"original_end":37},{"begin":39,"end":72,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":39,"original_end":72},{"begin":74,"end":77,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":74,"original_end":77},{"begin":79,"end":83,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":79,"original_end":83},{"begin":86,"end":88,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":86,"original_end":88},{"begin":90,"end":98,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":90,"original_end":98},{"begin":100,"end":103,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":100,"original_end":103},{"begin":105,"end":113,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":105,"original_end":113},{"begin":115,"end":129,"feature_id":"1","type":"UNOBSERVED_ATOM_XYZ","name":"partially modeled residue","description":"Some atom coordinates in this residue are not reported in model 1","value":null,"source":"PDB_INSTANCE","source_id":"2QZH.A","provenance_source":"PDB","original_begin":115,"original_end":129}]}]}],"errors":[]}