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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：Q9NV31 New Search
4PDB entries
4Biological assembly
4chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
Q9NV31 2cqj U3 small nucleolar ribonucleoprotein protein IMP3 homolog Author chain A Reference sequence 109–166 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
Q9NV31 7mq8 U3 small nucleolar ribonucleoprotein protein IMP3 Author chain LZ Reference sequence 1–184 1 Protein–RNA Heteromer Protein 71 RNA 4 75-meric （75） Consistent with all polymers
Q9NV31 7mq9 U3 small nucleolar ribonucleoprotein protein IMP3 Author chain LZ Reference sequence 1–184 1 Protein–RNA Heteromer Protein 70 RNA 4 74-meric （74） Consistent with all polymers
Q9NV31 7mqa U3 small nucleolar ribonucleoprotein protein IMP3 Author chain LZ Reference sequence 1–184 1 Protein–RNA Heteromer Protein 69 RNA 3 72-meric （72） 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.