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RSMA_HELPH
ID   RSMA_HELPH              Reviewed;         271 AA.
AC   Q1CRJ9;
DT   31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2006, sequence version 1.
DT   03-AUG-2022, entry version 90.
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=HPAG1_1356;
OS   Helicobacter pylori (strain HPAG1).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=357544;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HPAG1;
RX   PubMed=16788065; DOI=10.1073/pnas.0603784103;
RA   Oh J.D., Kling-Baeckhed H., Giannakis M., Xu J., Fulton R.S., Fulton L.A.,
RA   Cordum H.S., Wang C., Elliott G., Edwards J., Mardis E.R., Engstrand L.G.,
RA   Gordon J.I.;
RT   "The complete genome sequence of a chronic atrophic gastritis Helicobacter
RT   pylori strain: evolution during disease progression.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:9999-10004(2006).
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; CP000241; ABF85423.1; -; Genomic_DNA.
DR   RefSeq; WP_000259377.1; NC_008086.1.
DR   AlphaFoldDB; Q1CRJ9; -.
DR   SMR; Q1CRJ9; -.
DR   EnsemblBacteria; ABF85423; ABF85423; HPAG1_1356.
DR   KEGG; hpa:HPAG1_1356; -.
DR   HOGENOM; CLU_041220_0_2_7; -.
DR   OMA; KEEEPYF; -.
DR   OrthoDB; 2030110at2; -.
DR   Proteomes; UP000008835; 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   Gene3D; 1.10.8.100; -; 1.
DR   Gene3D; 3.40.50.150; -; 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   PANTHER; PTHR11727; PTHR11727; 1.
DR   Pfam; PF00398; RrnaAD; 1.
DR   SMART; SM00650; rADc; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00755; ksgA; 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; RNA-binding; rRNA processing;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..271
FT                   /note="Ribosomal RNA small subunit methyltransferase A"
FT                   /id="PRO_0000257295"
FT   BINDING         11
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         13
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         38
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         58
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         86
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         101
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
SQ   SEQUENCE   271 AA;  30519 MW;  27F16C5203FDCF25 CRC64;
     MVVAKKSLGQ HFLTDESFLD RIVDALPPLN PLKLVEIGVG LGDLTLKLLD RYPLKTYEID
     SSLCEKMRSK LKVQKKPFKL ELVEKDALFL KEEEPYFLIS NLPYYIATRL VLNALKDPKC
     RGLLVMTQKE VALKFCAKDS QNALSVLAHA IGNATLLFDV PPSAFSPPPK VFSSVFEVIK
     ESLKEKALAS LAQVPFFEEA LQKGFETLED FLKACFSSPR KTLSNNLKKS VSYKEKLDKV
     LDFLALENQP TSVRASEIKD YLKLLNYLLK G
 
 
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