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RSMA_BLOPB
ID   RSMA_BLOPB              Reviewed;         267 AA.
AC   Q493R7;
DT   09-JAN-2007, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   03-AUG-2022, entry version 96.
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=BPEN_130;
OS   Blochmannia pennsylvanicus (strain BPEN).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; ant endosymbionts; Candidatus Blochmannia.
OX   NCBI_TaxID=291272;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BPEN;
RX   PubMed=16077009; DOI=10.1101/gr.3771305;
RA   Degnan P.H., Lazarus A.B., Wernegreen J.J.;
RT   "Genome sequence of Blochmannia pennsylvanicus indicates parallel
RT   evolutionary trends among bacterial mutualists of insects.";
RL   Genome Res. 15:1023-1033(2005).
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; CP000016; AAZ40770.1; -; Genomic_DNA.
DR   RefSeq; WP_011282677.1; NC_007292.1.
DR   AlphaFoldDB; Q493R7; -.
DR   SMR; Q493R7; -.
DR   STRING; 291272.BPEN_130; -.
DR   EnsemblBacteria; AAZ40770; AAZ40770; BPEN_130.
DR   KEGG; bpn:BPEN_130; -.
DR   eggNOG; COG0030; Bacteria.
DR   HOGENOM; CLU_041220_0_1_6; -.
DR   OMA; KEEEPYF; -.
DR   BioCyc; CBLO291272:BPEN_RS00635-MON; -.
DR   Proteomes; UP000007794; 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..267
FT                   /note="Ribosomal RNA small subunit methyltransferase A"
FT                   /id="PRO_0000271903"
FT   BINDING         20
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         45
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         68
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         91
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT   BINDING         113
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
SQ   SEQUENCE   267 AA;  31009 MW;  7B9FF991D55367D1 CRC64;
     MKKIYYKNHL IKKKWSQVFL KDQNVIDTIV KTINPKKHQK ILEIGPGLGA LTKQILNIAD
     LDSLILIERD SNLVNRLVQM FNKKINILHQ DIMTTNFFDL SHKVGQKLRL IGNLPYNIAT
     ELIVYLFQYT NVIYDMHFMF QKEVATRLYA NPNKKEYGRL SIITQYHCKV VPLLTIPATS
     FFPIPKVESM VMRLLPHTNT PYPIVNIGKL SSLTKLAFRQ RRKTLRNSLS TFFNETEITQ
     KGINPALRAE NITINQYCTL ANMLNNK
 
 
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