AC MF_00270; DC Protein; auto c? or TR HAMAP; MF_00270; -; 1; level=0 XX Names: Ribosomal_bS18 XX case and not ID RS18 DE RecName: Full=Small ribosomal subunit protein bS18; GN Name=rpsR; else case ID RS18 DE RecName: Full=Small ribosomal subunit protein bS18; GN Name=rpsR; Synonyms=rps18; else case ID RR18 DE RecName: Full=Small ribosomal subunit protein bS18c; GN Name=rps18; end case XX case CC -!- FUNCTION: Binds as a heterodimer with protein bS6 to the central domain CC of the 16S rRNA, where it helps stabilize the platform of the 30S CC subunit. CC -!- SUBUNIT: Part of the 30S ribosomal subunit. Forms a tight heterodimer CC with protein bS6. end case case CC -!- COFACTOR: CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105; CC Note=Binds 1 Zn(2+) ion per subunit.; end case case CC -!- SUBUNIT: Part of the 30S ribosomal subunit. CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast. end case CC -!- SIMILARITY: Belongs to the bacterial ribosomal protein bS18 family. XX DR Pfam; PF01084; Ribosomal_S18; 1; trigger=no DR PRINTS; PR00974; RIBOSOMALS18; 1; trigger=no DR NCBIfam; TIGR00165; S18; 1; trigger=no DR PROSITE; PS00057; RIBOSOMAL_S18; 1; trigger=no XX KW Ribonucleoprotein KW Ribosomal protein KW RNA-binding KW rRNA-binding case KW Zinc KW Metal-binding end case XX GO GO:0019843; F:rRNA binding GO GO:0006412; P:translation case GO GO:0009507; C:chloroplast end case case GO GO:0008270; F:zinc ion binding end case XX FT From: RS181_MYCTU (P9WH49) FT BINDING 20 FT /ligand="Zn(2+)" FT /ligand_id="ChEBI:CHEBI:29105" FT Optional; Group: 1; Condition: C FT BINDING 23 FT /ligand="Zn(2+)" FT /ligand_id="ChEBI:CHEBI:29105" FT Optional; Group: 1; Condition: C FT BINDING 57 FT /ligand="Zn(2+)" FT /ligand_id="ChEBI:CHEBI:29105" FT Optional; Group: 1; Condition: C FT BINDING 60 FT /ligand="Zn(2+)" FT /ligand_id="ChEBI:CHEBI:29105" FT Optional; Group: 1; Condition: [CH] XX Size: 68-171; Related: None; Template: P0A7T7; Q5SLQ0; P9WH49; Scope: Bacteria Plastid Fusion: Nter: None Cter: None Duplicate: in FRAAA, MYCBO, MYCBP, MYCGI, MYCMM, MYCS2, MYCTA, MYCTU, MYCUA, MYCVP, CUPPJ, RHOJR, ROSCS, ROSS1, SACEN, STRCO, STRGG Plasmid: None Comments: As suggested in Ban et al., (2014, PMID 24524803), capital letters directly following protein names are used to distinguish different isoforms of the same protein. XX # Version: 33 # Last updated date: 2025-11-03 # Created date: 2005-02-28 //