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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：P42227 New Search
4PDB entries
7Biological assembly
21chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P42227 1bg1 PROTEIN (TRANSCRIPTION FACTOR STAT3B) Author chain A Reference sequence 127–722 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P42227 3cwg Signal transducer and activator of transcription 3 Author chain A Reference sequence 127–688 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P42227 3cwg Signal transducer and activator of transcription 3 Author chain B Reference sequence 127–688 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P42227 3cwg Signal transducer and activator of transcription 3 Author chain A Reference sequence 127–688 2 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P42227 3cwg Signal transducer and activator of transcription 3 Author chain B Reference sequence 127–688 2 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P42227 4e68 Signal transducer and activator of transcription 3 Author chain A Reference sequence 127–722 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P42227 4zia Signal transducer and activator of transcription 3 Author chain A Reference sequence 3–127 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain B Reference sequence 3–127 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain C Reference sequence 3–127 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain D Reference sequence 3–127 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain E Reference sequence 3–127 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain A Reference sequence 3–127 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain B Reference sequence 3–127 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain C Reference sequence 3–127 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain D Reference sequence 3–127 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain E Reference sequence 3–127 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain A Reference sequence 3–127 3 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain B Reference sequence 3–127 3 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain C Reference sequence 3–127 3 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain D Reference sequence 3–127 3 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P42227 4zia Signal transducer and activator of transcription 3 Author chain E Reference sequence 3–127 3 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.