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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：P18421 New Search
5PDB entries
5Biological assembly
6chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P18421 6epc Proteasome subunit beta type-1 Author chain 6 Reference sequence 1–240 1 Protein heterocomplex Heteromer Protein 32 32-meric （32） Consistent with protein count
P18421 6epd Proteasome subunit beta type-1 Author chain 6 Reference sequence 1–240 1 Protein heterocomplex Heteromer Protein 32 32-meric （32） Consistent with protein count
P18421 6epe Proteasome subunit beta type-1 Author chain 6 Reference sequence 1–240 1 Protein heterocomplex Heteromer Protein 32 32-meric （32） Consistent with protein count
P18421 6epf Proteasome subunit beta type-1 Author chain 6 Reference sequence 1–240 1 Protein heterocomplex Heteromer Protein 32 32-meric （32） Consistent with protein count
P18421 6tu3 Proteasome subunit beta type-1 Author chain M Reference sequence 1–240 1 Protein heterocomplex Heteromer Protein 28 28-meric （28） Consistent with protein count
P18421 6tu3 Proteasome subunit beta type-1 Author chain a Reference sequence 1–240 1 Protein heterocomplex Heteromer Protein 28 28-meric （28） 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.