ID   RS18_RHOPA              Reviewed;          79 AA.
AC   Q6N5A3;
DT   15-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 87.
DE   RecName: Full=30S ribosomal protein S18 {ECO:0000255|HAMAP-Rule:MF_00270};
DE   AltName: Full=RRP-S18;
GN   Name=rpsR {ECO:0000255|HAMAP-Rule:MF_00270}; OrderedLocusNames=RPA3078;
OS   Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=258594;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-98 / CGA009;
RX   PubMed=14704707; DOI=10.1038/nbt923;
RA   Larimer F.W., Chain P., Hauser L., Lamerdin J.E., Malfatti S., Do L.,
RA   Land M.L., Pelletier D.A., Beatty J.T., Lang A.S., Tabita F.R.,
RA   Gibson J.L., Hanson T.E., Bobst C., Torres y Torres J.L., Peres C.,
RA   Harrison F.H., Gibson J., Harwood C.S.;
RT   "Complete genome sequence of the metabolically versatile photosynthetic
RT   bacterium Rhodopseudomonas palustris.";
RL   Nat. Biotechnol. 22:55-61(2004).
RN   [2]
RP   MASS SPECTROMETRY.
RC   STRAIN=ATCC BAA-98 / CGA009;
RX   PubMed=15473684; DOI=10.1021/pr049940z;
RA   Strader M.B., VerBerkmoes N.C., Tabb D.L., Connelly H.M., Barton J.W.,
RA   Bruce B.D., Pelletier D.A., Davison B.H., Hettich R.L., Larimer F.W.,
RA   Hurst G.B.;
RT   "Characterization of the 70S ribosome from Rhodopseudomonas palustris using
RT   an integrated 'top-down' and 'bottom-up' mass spectrometric approach.";
RL   J. Proteome Res. 3:965-978(2004).
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   -!- PTM: Both N-terminus methionine truncation and retention have been
CC       observed for this protein.
CC   -!- PTM: May be methylated up to 6 times, on undetermined residues.
CC   -!- MASS SPECTROMETRY: Mass=9177.8; Method=Electrospray;
CC       Evidence={ECO:0000269|PubMed:15473684};
CC   -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS18 family.
CC       {ECO:0000255|HAMAP-Rule:MF_00270}.
CC   -!- CAUTION: Both N-terminus methionine truncation and retention have been
CC       observed for this protein by 2 different experiments. {ECO:0000305}.
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DR   EMBL; BX572602; CAE28519.1; -; Genomic_DNA.
DR   RefSeq; WP_011158623.1; NC_005296.1.
DR   AlphaFoldDB; Q6N5A3; -.
DR   SMR; Q6N5A3; -.
DR   IntAct; Q6N5A3; 1.
DR   STRING; 258594.RPA3078; -.
DR   PRIDE; Q6N5A3; -.
DR   EnsemblBacteria; CAE28519; CAE28519; RPA3078.
DR   GeneID; 66894160; -.
DR   KEGG; rpa:RPA3078; -.
DR   eggNOG; COG0238; Bacteria.
DR   HOGENOM; CLU_148710_2_3_5; -.
DR   OMA; QKKYCRF; -.
DR   PhylomeDB; Q6N5A3; -.
DR   BioCyc; RPAL258594:TX73_RS15705-MON; -.
DR   Proteomes; UP000001426; 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   1: Evidence at protein level;
KW   Reference proteome; Ribonucleoprotein; Ribosomal protein; RNA-binding;
KW   rRNA-binding.
FT   CHAIN           1..79
FT                   /note="30S ribosomal protein S18"
FT                   /id="PRO_0000111216"
SQ   SEQUENCE   79 AA;  9095 MW;  13D0E46BD39A7DF7 CRC64;
     MAEAGARRPF FRRRKTCPFT GANAPKIDYK DSKLLMRYVS ERGKIVPSRI TAVSAKKQRE
     LARAIKRARF LGLLPYVIR