ID   RS21_PROM3              Reviewed;          58 AA.
AC   A2C8K0;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 74.
DE   RecName: Full=30S ribosomal protein S21 {ECO:0000255|HAMAP-Rule:MF_00358};
GN   Name=rpsU {ECO:0000255|HAMAP-Rule:MF_00358};
GN   Synonyms=rps21 {ECO:0000255|HAMAP-Rule:MF_00358};
GN   OrderedLocusNames=P9303_10611;
OS   Prochlorococcus marinus (strain MIT 9303).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=59922;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9303;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS21 family.
CC       {ECO:0000255|HAMAP-Rule:MF_00358}.
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DR   EMBL; CP000554; ABM77810.1; -; Genomic_DNA.
DR   AlphaFoldDB; A2C8K0; -.
DR   SMR; A2C8K0; -.
DR   STRING; 59922.P9303_10611; -.
DR   EnsemblBacteria; ABM77810; ABM77810; P9303_10611.
DR   KEGG; pmf:P9303_10611; -.
DR   HOGENOM; CLU_159258_3_1_3; -.
DR   OMA; HRHFETN; -.
DR   BioCyc; PMAR59922:G1G80-948-MON; -.
DR   Proteomes; UP000002274; 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; IPR018278; Ribosomal_S21_CS.
DR   InterPro; IPR038380; S21_sf.
DR   PANTHER; PTHR21109; PTHR21109; 1.
DR   Pfam; PF01165; Ribosomal_S21; 1.
DR   PRINTS; PR00976; RIBOSOMALS21.
DR   TIGRFAMs; TIGR00030; S21p; 1.
DR   PROSITE; PS01181; RIBOSOMAL_S21; 1.
PE   3: Inferred from homology;
KW   Ribonucleoprotein; Ribosomal protein.
FT   CHAIN           1..58
FT                   /note="30S ribosomal protein S21"
FT                   /id="PRO_1000005151"
FT   REGION          31..58
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        31..46
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   58 AA;  6906 MW;  E77734CFFD5DFDB7 CRC64;
     MAQVTVGENE GVESALRRFK RAVSKAGIFS DLKRIRHHET PVEKYKRKAQ QRRRSRRR