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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：O78750 New Search
2PDB entries
2Biological assembly
2chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
O78750 5j4z Cytochrome c oxidase subunit 2 Author chain BO Reference sequence 1–227 1 Protein heterocomplex Heteromer Protein 89 74-meric （74） Review required
O78750 5j7y Cytochrome c oxidase subunit 2 Author chain BO Reference sequence 1–227 1 Protein heterocomplex Heteromer Protein 89 89-meric （89） Consistent with protein count

“Homomeric versus heteromeric classification follows protein identity; different constructs of the same UniProt entry still require comparison of reference-sequence ranges, mutations and missing segments. Assemblies marked for review remain visible but are not included in the highest-confidence candidate set.