ID   RS18_PROM2              Reviewed;          73 AA.
AC   A8G4V8;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-NOV-2007, sequence version 1.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=30S ribosomal protein S18 {ECO:0000255|HAMAP-Rule:MF_00270};
GN   Name=rpsR {ECO:0000255|HAMAP-Rule:MF_00270};
GN   Synonyms=rps18 {ECO:0000255|HAMAP-Rule:MF_00270};
GN   OrderedLocusNames=P9215_10241;
OS   Prochlorococcus marinus (strain MIT 9215).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=93060;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9215;
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   -!- FUNCTION: Binds as a heterodimer with protein S6 to the central domain
CC       of the 16S rRNA, where it helps stabilize the platform of the 30S
CC       subunit. {ECO:0000255|HAMAP-Rule:MF_00270}.
CC   -!- SUBUNIT: Part of the 30S ribosomal subunit. Forms a tight heterodimer
CC       with protein S6. {ECO:0000255|HAMAP-Rule:MF_00270}.
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS18 family.
CC       {ECO:0000255|HAMAP-Rule:MF_00270}.
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DR   EMBL; CP000825; ABV50639.1; -; Genomic_DNA.
DR   RefSeq; WP_002806014.1; NC_009840.1.
DR   AlphaFoldDB; A8G4V8; -.
DR   SMR; A8G4V8; -.
DR   STRING; 93060.P9215_10241; -.
DR   EnsemblBacteria; ABV50639; ABV50639; P9215_10241.
DR   KEGG; pmh:P9215_10241; -.
DR   eggNOG; COG0238; Bacteria.
DR   HOGENOM; CLU_148710_2_3_3; -.
DR   OMA; QKKYCRF; -.
DR   OrthoDB; 1940575at2; -.
DR   Proteomes; UP000002014; Chromosome.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003735; F:structural constituent of ribosome; IEA:InterPro.
DR   GO; GO:0006412; P:translation; IEA:UniProtKB-UniRule.
DR   Gene3D; 4.10.640.10; -; 1.
DR   HAMAP; MF_00270; Ribosomal_S18; 1.
DR   InterPro; IPR001648; Ribosomal_S18.
DR   InterPro; IPR018275; Ribosomal_S18_CS.
DR   InterPro; IPR036870; Ribosomal_S18_sf.
DR   PANTHER; PTHR13479; PTHR13479; 1.
DR   Pfam; PF01084; Ribosomal_S18; 1.
DR   PRINTS; PR00974; RIBOSOMALS18.
DR   SUPFAM; SSF46911; SSF46911; 1.
DR   TIGRFAMs; TIGR00165; S18; 1.
DR   PROSITE; PS00057; RIBOSOMAL_S18; 1.
PE   3: Inferred from homology;
KW   Ribonucleoprotein; Ribosomal protein; RNA-binding; rRNA-binding.
FT   CHAIN           1..73
FT                   /note="30S ribosomal protein S18"
FT                   /id="PRO_1000059141"
SQ   SEQUENCE   73 AA;  8317 MW;  3342A45AADB43285 CRC64;
     MPNSIFKKQL SPIKPGDPID YKDVELLKKF ITERGKILPR RMTGLTSKQQ RDLTLAVKRA
     RIVALLPFVN PEG