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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：P21477 New Search
19PDB entries
19Biological assembly
19chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P21477 3j9w 30S ribosomal protein bS20 Author chain AT Reference sequence 1–88 1 Protein–RNA Heteromer Protein 49 RNA 5 54-meric （54） Consistent with all polymers
P21477 5njt 30S ribosomal protein S20 Author chain T Reference sequence 3–88 1 Protein–RNA Heteromer Protein 48 RNA 3 32-meric （32） Review required
P21477 6ha1 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 46 RNA 5 51-meric （51） Consistent with all polymers
P21477 6ha8 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 48 RNA 5 53-meric （53） Consistent with all polymers
P21477 6htq 30S ribosomal protein S20 Author chain t Reference sequence 4–86 1 Protein–RNA Heteromer Protein 47 RNA 6 53-meric （53） Consistent with all polymers
P21477 7o5b 30S ribosomal protein S20 Author chain T Reference sequence 1–88 1 Protein–RNA Heteromer Protein 50 RNA 6 54-meric （54） Review required
P21477 7qv1 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 48 RNA 5 53-meric （53） Consistent with all polymers
P21477 7qv2 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 47 RNA 6 53-meric （53） Consistent with all polymers
P21477 7qv3 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 50 RNA 5 55-meric （55） Consistent with all polymers
P21477 8buu 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 46 RNA 5 51-meric （51） Consistent with all polymers
P21477 8cdu 30S ribosomal protein S20 Author chain S Reference sequence 1–88 1 Protein–RNA Heteromer Protein 20 RNA 2 22-meric （22） Consistent with all polymers
P21477 8cdv 30S ribosomal protein S20 Author chain S Reference sequence 1–88 1 Protein–RNA Heteromer Protein 17 RNA 2 nonadecameric （19） Consistent with all polymers
P21477 8cec 30S ribosomal protein S20 Author chain S Reference sequence 1–88 1 Protein–RNA Heteromer Protein 20 RNA 2 22-meric （22） Consistent with all polymers
P21477 8ced 30S ribosomal protein S20 Author chain S Reference sequence 1–88 1 Protein–RNA Heteromer Protein 20 RNA 2 22-meric （22） Consistent with all polymers
P21477 8cee 30S ribosomal protein S20 Author chain S Reference sequence 1–88 1 Protein–RNA Heteromer Protein 20 RNA 2 22-meric （22） Consistent with all polymers
P21477 8qcq 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 44 RNA 6 50-meric （50） Consistent with all polymers
P21477 9fy1 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 48 RNA 5 53-meric （53） Consistent with all polymers
P21477 9fy2 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 47 RNA 5 52-meric （52） Consistent with all polymers
P21477 9fy3 30S ribosomal protein S20 Author chain t Reference sequence 1–88 1 Protein–RNA Heteromer Protein 47 RNA 6 53-meric （53） 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.