ID   RS21_PELUB              Reviewed;          64 AA.
AC   Q4FN40;
DT   12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT   30-AUG-2005, sequence version 1.
DT   03-AUG-2022, entry version 75.
DE   RecName: Full=30S ribosomal protein S21 {ECO:0000255|HAMAP-Rule:MF_00358};
GN   Name=rpsU {ECO:0000255|HAMAP-Rule:MF_00358}; OrderedLocusNames=SAR11_0578;
OS   Pelagibacter ubique (strain HTCC1062).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Pelagibacterales;
OC   Pelagibacteraceae; Candidatus Pelagibacter.
OX   NCBI_TaxID=335992;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HTCC1062;
RX   PubMed=16109880; DOI=10.1126/science.1114057;
RA   Giovannoni S.J., Tripp H.J., Givan S., Podar M., Vergin K.L., Baptista D.,
RA   Bibbs L., Eads J., Richardson T.H., Noordewier M., Rappe M.S., Short J.M.,
RA   Carrington J.C., Mathur E.J.;
RT   "Genome streamlining in a cosmopolitan oceanic bacterium.";
RL   Science 309:1242-1245(2005).
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS21 family.
CC       {ECO:0000255|HAMAP-Rule:MF_00358}.
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DR   EMBL; CP000084; AAZ21399.1; -; Genomic_DNA.
DR   RefSeq; WP_006997326.1; NC_007205.1.
DR   AlphaFoldDB; Q4FN40; -.
DR   SMR; Q4FN40; -.
DR   STRING; 335992.SAR11_0578; -.
DR   EnsemblBacteria; AAZ21399; AAZ21399; SAR11_0578.
DR   GeneID; 66295083; -.
DR   KEGG; pub:SAR11_0578; -.
DR   eggNOG; COG0828; Bacteria.
DR   HOGENOM; CLU_159258_0_2_5; -.
DR   OMA; MRARESY; -.
DR   OrthoDB; 2088764at2; -.
DR   Proteomes; UP000002528; Chromosome.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0003735; F:structural constituent of ribosome; IEA:InterPro.
DR   GO; GO:0006412; P:translation; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.20.5.1150; -; 1.
DR   HAMAP; MF_00358; Ribosomal_S21; 1.
DR   InterPro; IPR001911; Ribosomal_S21.
DR   InterPro; IPR038380; S21_sf.
DR   Pfam; PF01165; Ribosomal_S21; 1.
DR   TIGRFAMs; TIGR00030; S21p; 1.
PE   3: Inferred from homology;
KW   Reference proteome; Ribonucleoprotein; Ribosomal protein.
FT   CHAIN           1..64
FT                   /note="30S ribosomal protein S21"
FT                   /id="PRO_0000266721"
SQ   SEQUENCE   64 AA;  7777 MW;  114708E9A25932EB CRC64;
     MKIEVKDNNI EQALRVLKRK LQRDGFFKVV KLKSVYEKPS EKKKRILQEN IKRVKKLNKL
     KNRI