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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：B2SQT4 New Search
2PDB entries
2Biological assembly
4chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
B2SQT4 6j9e DNA-directed RNA polymerase subunit alpha Author chain A Reference sequence 1–332 1 Other combination Heteromer Protein 7 DNA 2 RNA 1 decameric （10） Consistent with all polymers
B2SQT4 6j9e DNA-directed RNA polymerase subunit alpha Author chain B Reference sequence 1–332 1 Other combination Heteromer Protein 7 DNA 2 RNA 1 decameric （10） Consistent with all polymers
B2SQT4 6j9f DNA-directed RNA polymerase subunit alpha Author chain A Reference sequence 1–332 1 Other combination Heteromer Protein 6 DNA 2 RNA 1 nonameric （9） Consistent with all polymers
B2SQT4 6j9f DNA-directed RNA polymerase subunit alpha Author chain B Reference sequence 1–332 1 Other combination Heteromer Protein 6 DNA 2 RNA 1 nonameric （9） Consistent with all polymers

“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.