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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：Q64444 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
Q64444 2znc CARBONIC ANHYDRASE IV Author chain A Reference sequence 22–279 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q64444 3znc CARBONIC ANHYDRASE IV Author chain A Reference sequence 22–279 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q64444 8jif Carbonic anhydrase 4 Author chain R Reference sequence 22–277 1 Protein heterocomplex Heteromer Protein 4 tetrameric （4） 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.