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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：Q9FCQ0 New Search
4PDB entries
4Biological assembly
8chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
Q9FCQ0 1gq1 CYTOCHROME CD1 NITRITE REDUCTASE Author chain A Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1gq1 CYTOCHROME CD1 NITRITE REDUCTASE Author chain B Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1h9x CYTOCHROME CD1 NITRITE REDUCTASE Author chain A Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1h9x CYTOCHROME CD1 NITRITE REDUCTASE Author chain B Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1h9y CYTOCHROME CD1 NITRITE REDUCTASE Author chain A Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1h9y CYTOCHROME CD1 NITRITE REDUCTASE Author chain B Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1hcm CYTOCHROME CD1 NITRITE REDUCTASE Author chain A Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q9FCQ0 1hcm CYTOCHROME CD1 NITRITE REDUCTASE Author chain B Reference sequence 30–596 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） 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.