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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：P21338 New Search
5PDB entries
5Biological assembly
5chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P21338 2ea1 Ribonuclease I Author chain A Reference sequence 24–268 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P21338 2pqx Ribonuclease I Author chain A Reference sequence 24–268 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P21338 2pqy Ribonuclease I Author chain A Reference sequence 24–268 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P21338 2z70 Ribonuclease I Author chain A Reference sequence 24–268 1 Protein–DNA Monomer Protein 1 DNA 1 dimeric （2） Consistent with all polymers
P21338 9iot Ribonuclease I Author chain z Reference sequence 1–268 1 Protein–RNA Heteromer Protein 53 RNA 3 56-meric （56） 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.