ID RSMA_MACCJ Reviewed; 296 AA.
AC B9E8V8;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 24-MAR-2009, sequence version 1.
DT 27-MAR-2024, entry version 78.
DE RecName: Full=Ribosomal RNA small subunit methyltransferase A {ECO:0000255|HAMAP-Rule:MF_00607};
DE EC=2.1.1.182 {ECO:0000255|HAMAP-Rule:MF_00607};
DE AltName: Full=16S rRNA (adenine(1518)-N(6)/adenine(1519)-N(6))-dimethyltransferase {ECO:0000255|HAMAP-Rule:MF_00607};
DE AltName: Full=16S rRNA dimethyladenosine transferase {ECO:0000255|HAMAP-Rule:MF_00607};
DE AltName: Full=16S rRNA dimethylase {ECO:0000255|HAMAP-Rule:MF_00607};
DE AltName: Full=S-adenosylmethionine-6-N', N'-adenosyl(rRNA) dimethyltransferase {ECO:0000255|HAMAP-Rule:MF_00607};
GN Name=rsmA {ECO:0000255|HAMAP-Rule:MF_00607};
GN Synonyms=ksgA {ECO:0000255|HAMAP-Rule:MF_00607};
GN OrderedLocusNames=MCCL_1919;
OS Macrococcus caseolyticus (strain JCSC5402).
OC Bacteria; Bacillota; Bacilli; Bacillales; Staphylococcaceae; Macrococcus.
OX NCBI_TaxID=458233;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCSC5402;
RX PubMed=19074389; DOI=10.1128/jb.01058-08;
RA Baba T., Kuwahara-Arai K., Uchiyama I., Takeuchi F., Ito T., Hiramatsu K.;
RT "Complete genome sequence of Macrococcus caseolyticus strain JCSCS5402,
RT reflecting the ancestral genome of the human-pathogenic staphylococci.";
RL J. Bacteriol. 191:1180-1190(2009).
CC -!- FUNCTION: Specifically dimethylates two adjacent adenosines (A1518 and
CC A1519) in the loop of a conserved hairpin near the 3'-end of 16S rRNA
CC in the 30S particle. May play a critical role in biogenesis of 30S
CC subunits. {ECO:0000255|HAMAP-Rule:MF_00607}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=adenosine(1518)/adenosine(1519) in 16S rRNA + 4 S-adenosyl-L-
CC methionine = 4 H(+) + N(6)-dimethyladenosine(1518)/N(6)-
CC dimethyladenosine(1519) in 16S rRNA + 4 S-adenosyl-L-homocysteine;
CC Xref=Rhea:RHEA:19609, Rhea:RHEA-COMP:10232, Rhea:RHEA-COMP:10233,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:74411, ChEBI:CHEBI:74493; EC=2.1.1.182;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00607};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00607}.
CC -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC superfamily. rRNA adenine N(6)-methyltransferase family. RsmA
CC subfamily. {ECO:0000255|HAMAP-Rule:MF_00607}.
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DR EMBL; AP009484; BAH18626.1; -; Genomic_DNA.
DR RefSeq; WP_015912418.1; NC_011999.1.
DR AlphaFoldDB; B9E8V8; -.
DR SMR; B9E8V8; -.
DR STRING; 458233.MCCL_1919; -.
DR KEGG; mcl:MCCL_1919; -.
DR eggNOG; COG0030; Bacteria.
DR HOGENOM; CLU_041220_0_0_9; -.
DR OrthoDB; 9814755at2; -.
DR Proteomes; UP000001383; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0052908; F:16S rRNA (adenine(1518)-N(6)/adenine(1519)-N(6))-dimethyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR CDD; cd02440; AdoMet_MTases; 1.
DR Gene3D; 1.10.8.100; Ribosomal RNA adenine dimethylase-like, domain 2; 1.
DR Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 1.
DR HAMAP; MF_00607; 16SrRNA_methyltr_A; 1.
DR InterPro; IPR001737; KsgA/Erm.
DR InterPro; IPR023165; rRNA_Ade_diMease-like_C.
DR InterPro; IPR020596; rRNA_Ade_Mease_Trfase_CS.
DR InterPro; IPR020598; rRNA_Ade_methylase_Trfase_N.
DR InterPro; IPR011530; rRNA_adenine_dimethylase.
DR InterPro; IPR029063; SAM-dependent_MTases_sf.
DR NCBIfam; TIGR00755; ksgA; 1.
DR PANTHER; PTHR11727; DIMETHYLADENOSINE TRANSFERASE; 1.
DR PANTHER; PTHR11727:SF7; DIMETHYLADENOSINE TRANSFERASE-RELATED; 1.
DR Pfam; PF00398; RrnaAD; 1.
DR SMART; SM00650; rADc; 1.
DR SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
DR PROSITE; PS01131; RRNA_A_DIMETH; 1.
DR PROSITE; PS51689; SAM_RNA_A_N6_MT; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Methyltransferase; Reference proteome; RNA-binding;
KW rRNA processing; S-adenosyl-L-methionine; Transferase.
FT CHAIN 1..296
FT /note="Ribosomal RNA small subunit methyltransferase A"
FT /id="PRO_1000194388"
FT BINDING 30
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 32
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 57
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 78
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 103
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 128
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
SQ SEQUENCE 296 AA; 33374 MW; B7E6C29C05998BAF CRC64;
MEYNDIATPT RTKQLLDQYG FKFKKSLGQN FLVDTNVIRN IIEAAGIDKT SGVIEIGPGM
GSLTEQLAKH AKQVLAFEID QRLIPILGET LSPYDNVTVI NEDILKADVA SAIETYLHHC
DEIFVVANLP YYITTPILMG LLEKNLNINS YVVMMQKEVG ERLSAIPSTK AYGSLSIAVQ
YYTDVKRIMV VPKGVFMPPP NVDSLVVKLT TLERPRVDVE DENLFFKLTR GAFVQRRKTI
LNNYMSLIQD SKEHKSRIIE WLEASGVAPS RRGESLNLND YAQLSNNMKK YPELVI
//
