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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：A0A1D4K9U8 New Search
2PDB entries
2Biological assembly
3chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
A0A1D4K9U8 5t7v 30S ribosomal protein S18 Author chain S9 Reference sequence 24–78 1 Protein–RNA Heteromer Protein 38 RNA 4 42-meric （42） Consistent with all polymers
A0A1D4K9U8 6fxc 30S ribosomal protein S18 Author chain Ar Reference sequence 24–77 1 Protein–RNA Heteromer Protein 98 RNA 6 104-meric （104） Consistent with all polymers
A0A1D4K9U8 6fxc 30S ribosomal protein S18 Author chain Br Reference sequence 24–77 1 Protein–RNA Heteromer Protein 98 RNA 6 104-meric （104） 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.