ID   RS3_SPICI               Reviewed;         252 AA.
AC   O31161;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   25-MAY-2022, entry version 90.
DE   RecName: Full=30S ribosomal protein S3 {ECO:0000255|HAMAP-Rule:MF_01309};
GN   Name=rpsC {ECO:0000255|HAMAP-Rule:MF_01309};
OS   Spiroplasma citri.
OC   Bacteria; Tenericutes; Mollicutes; Entomoplasmatales; Spiroplasmataceae;
OC   Spiroplasma.
OX   NCBI_TaxID=2133;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 27556 / NCPPB 2647 / R8A2;
RX   PubMed=9733727; DOI=10.1074/jbc.273.38.24379;
RA   Le Dantec L., Castroviejo M., Bove J.M., Saillard C.;
RT   "Purification, cloning, and preliminary characterization of a Spiroplasma
RT   citri ribosomal protein with DNA binding capacity.";
RL   J. Biol. Chem. 273:24379-24386(1998).
CC   -!- FUNCTION: Binds the lower part of the 30S subunit head. Binds mRNA in
CC       the 70S ribosome, positioning it for translation. {ECO:0000255|HAMAP-
CC       Rule:MF_01309}.
CC   -!- SUBUNIT: Part of the 30S ribosomal subunit. Forms a tight complex with
CC       proteins S10 and S14. {ECO:0000255|HAMAP-Rule:MF_01309}.
CC   -!- SIMILARITY: Belongs to the universal ribosomal protein uS3 family.
CC       {ECO:0000255|HAMAP-Rule:MF_01309}.
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DR   EMBL; AF031160; AAC35870.1; -; Genomic_DNA.
DR   AlphaFoldDB; O31161; -.
DR   SMR; O31161; -.
DR   STRING; 2133.SCITRI_00337; -.
DR   GO; GO:0005840; C:ribosome; IEA:UniProtKB-KW.
DR   GO; GO:0003729; F:mRNA binding; IEA:UniProtKB-UniRule.
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; 3.30.1140.32; -; 1.
DR   Gene3D; 3.30.300.20; -; 1.
DR   HAMAP; MF_01309_B; Ribosomal_S3_B; 1.
DR   InterPro; IPR004087; KH_dom.
DR   InterPro; IPR015946; KH_dom-like_a/b.
DR   InterPro; IPR004044; KH_dom_type_2.
DR   InterPro; IPR009019; KH_sf_prok-type.
DR   InterPro; IPR005704; Ribosomal_S3_bac-typ.
DR   InterPro; IPR001351; Ribosomal_S3_C.
DR   InterPro; IPR036419; Ribosomal_S3_C_sf.
DR   Pfam; PF07650; KH_2; 1.
DR   Pfam; PF00189; Ribosomal_S3_C; 1.
DR   SMART; SM00322; KH; 1.
DR   SUPFAM; SSF54814; SSF54814; 1.
DR   SUPFAM; SSF54821; SSF54821; 1.
DR   TIGRFAMs; TIGR01009; rpsC_bact; 1.
DR   PROSITE; PS50823; KH_TYPE_2; 1.
PE   3: Inferred from homology;
KW   Ribonucleoprotein; Ribosomal protein; RNA-binding; rRNA-binding.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..252
FT                   /note="30S ribosomal protein S3"
FT                   /id="PRO_0000130196"
FT   DOMAIN          39..110
FT                   /note="KH type-2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01309"
FT   REGION          218..252
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   252 AA;  28096 MW;  F81DC4DDFF0BE116 CRC64;
     MGQKVSPTGL RVGVIKTWDS RWYAEKQEYV KWLHQDIKIR KALMKELKGA SVSKIEIERT
     KKEIVIFIRT ARVGVVLGQE GKNIAKLVKL VHITIGDRKM EVKINVVEIK NPDTDAQLVA
     NTIAEQIVNR ASFRSVQKLA IKKAMKAGAQ GIKTSVSGRL GGVDMARTEG YTKGTVPLAT
     LRSDIDFALA EALTTYGQIG VKVWICKGEI LSKELVSTSD EKPKFEKRDF NRSNNNRRDQ
     APKSHPVAKE AK