ID   RS18_GEOSE              Reviewed;          78 AA.
AC   P10806;
DT   01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   25-MAY-2022, entry version 93.
DE   RecName: Full=30S ribosomal protein S18;
DE   AltName: Full=BS19;
DE   AltName: Full=BS21;
GN   Name=rpsR;
OS   Geobacillus stearothermophilus (Bacillus stearothermophilus).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus.
OX   NCBI_TaxID=1422;
RN   [1]
RP   PROTEIN SEQUENCE OF 2-78.
RC   STRAIN=799;
RX   PubMed=2647521; DOI=10.1016/0014-5793(89)80232-7;
RA   McDougall J., Choli T., Kruft V., Kapp U., Wittmann-Liebold B.;
RT   "The complete amino acid sequence of ribosomal protein S18 from the
RT   moderate thermophile Bacillus stearothermophilus.";
RL   FEBS Lett. 245:253-260(1989).
RN   [2]
RP   PROTEIN SEQUENCE OF 2-16.
RC   STRAIN=DSM 13240 / CIP 106956 / 10;
RX   PubMed=4607606; DOI=10.1016/0014-5793(74)80391-1;
RA   Yaguchi M., Matheson A.T., Visentin L.P.;
RT   "Procaryotic ribosomal proteins: N-terminal sequence homologies and
RT   structural correspondence of 30 S ribosomal proteins from Escherichia coli
RT   and Bacillus stearothermophilus.";
RL   FEBS Lett. 46:296-300(1974).
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:0000250}.
CC   -!- SUBUNIT: Part of the 30S ribosomal subunit. Forms a tight heterodimer
CC       with protein S6 (By similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS18 family.
CC       {ECO:0000305}.
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DR   PIR; S03556; R3BS18.
DR   RefSeq; WP_008880812.1; NZ_RCTK01000012.1.
DR   AlphaFoldDB; P10806; -.
DR   SMR; P10806; -.
DR   GeneID; 58573227; -.
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   1: Evidence at protein level;
KW   Direct protein sequencing; Ribonucleoprotein; Ribosomal protein;
KW   RNA-binding; rRNA-binding.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:2647521,
FT                   ECO:0000269|PubMed:4607606"
FT   CHAIN           2..78
FT                   /note="30S ribosomal protein S18"
FT                   /id="PRO_0000111116"
SQ   SEQUENCE   78 AA;  8969 MW;  DD39B4CC647E687B CRC64;
     MAGRKGGRGK RRKVCYFTAN NITHIDYKDV DLLKKFISER GKILPRRVTG TSAKYQRKLT
     VAIKRARQMA LLPYVADE