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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：P23940 New Search
5PDB entries
5Biological assembly
9chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P23940 1bam ENDONUCLEASE BamH I Author chain A Reference sequence 1–213 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P23940 1bhm PROTEIN (BAMHI (E.C.3.1.21.4)) Author chain A Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P23940 1bhm PROTEIN (BAMHI (E.C.3.1.21.4)) Author chain B Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P23940 1esg TYPE II RESTRICTION ENZYME BAMHI Author chain A Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P23940 1esg TYPE II RESTRICTION ENZYME BAMHI Author chain B Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P23940 2bam PROTEIN (ENDONUCLEASE BAMHI) Author chain A Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P23940 2bam PROTEIN (ENDONUCLEASE BAMHI) Author chain B Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P23940 3bam PROTEIN (RESTRICTION ENDONUCLEASE BAMHI) Author chain A Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 3 pentameric （5） Consistent with all polymers
P23940 3bam PROTEIN (RESTRICTION ENDONUCLEASE BAMHI) Author chain B Reference sequence 1–213 1 Protein–DNA Homooligomer Protein 2 DNA 3 pentameric （5） 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.