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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：Q4G3B8 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
Q4G3B8 9jj8 Photosystem I reaction center subunit IX Author chain j Reference sequence 1–40 1 Protein heterocomplex Heteromer Protein 51 51-meric （51） Consistent with protein count
Q4G3B8 9uen Photosystem I reaction center subunit IX Author chain j Reference sequence 1–40 1 Protein heterocomplex Heteromer Protein 48 48-meric （48） 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.