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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：Q2FEQ5 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
Q2FEQ5 9i88 Large ribosomal subunit protein uL18 Author chain R Reference sequence 1–119 1 Protein–RNA Heteromer Protein 47 RNA 4 51-meric （51） Consistent with all polymers
Q2FEQ5 9i89 Large ribosomal subunit protein uL18 Author chain R Reference sequence 1–119 1 Protein–RNA Heteromer Protein 47 RNA 4 51-meric （51） Consistent with all polymers
Q2FEQ5 9qeg Large ribosomal subunit protein uL18 Author chain M Reference sequence 1–119 1 Protein–RNA Heteromer Protein 47 RNA 7 54-meric （54） Consistent with all polymers
Q2FEQ5 9qeh Large ribosomal subunit protein uL18 Author chain M Reference sequence 1–119 1 Protein–RNA Heteromer Protein 27 RNA 4 31-meric （31） 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.