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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：P03891 New Search
3PDB entries
3Biological assembly
3chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P03891 9cwt NADH-ubiquinone oxidoreductase chain 2 Author chain i Reference sequence 1–347 1 Protein heterocomplex Heteromer Protein 45 45-meric （45） Consistent with protein count
P03891 9i4i NADH-ubiquinone oxidoreductase chain 2 Author chain i Reference sequence 1–347 1 Protein heterocomplex Heteromer Protein 45 45-meric （45） Consistent with protein count
P03891 9ti4 NADH-ubiquinone oxidoreductase chain 2 Author chain i Reference sequence 1–347 1 Protein heterocomplex Heteromer Protein 45 45-meric （45） 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.