RSMA_BUCBP
ID RSMA_BUCBP Reviewed; 260 AA.
AC P59524;
DT 11-APR-2003, integrated into UniProtKB/Swiss-Prot.
DT 11-APR-2003, sequence version 1.
DT 03-AUG-2022, entry version 109.
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}; OrderedLocusNames=bbp_131;
OS Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Erwiniaceae; Buchnera.
OX NCBI_TaxID=224915;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Bp;
RX PubMed=12522265; DOI=10.1073/pnas.0235981100;
RA van Ham R.C.H.J., Kamerbeek J., Palacios C., Rausell C., Abascal F.,
RA Bastolla U., Fernandez J.M., Jimenez L., Postigo M., Silva F.J.,
RA Tamames J., Viguera E., Latorre A., Valencia A., Moran F., Moya A.;
RT "Reductive genome evolution in Buchnera aphidicola.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:581-586(2003).
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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AE016826; AAO26865.1; -; Genomic_DNA.
DR RefSeq; WP_011091266.1; NC_004545.1.
DR AlphaFoldDB; P59524; -.
DR SMR; P59524; -.
DR STRING; 224915.bbp_131; -.
DR PRIDE; P59524; -.
DR EnsemblBacteria; AAO26865; AAO26865; bbp_131.
DR GeneID; 56470675; -.
DR KEGG; bab:bbp_131; -.
DR eggNOG; COG0030; Bacteria.
DR HOGENOM; CLU_041220_0_1_6; -.
DR OMA; KEEEPYF; -.
DR OrthoDB; 2030110at2; -.
DR Proteomes; UP000000601; 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; Reference proteome; RNA-binding;
KW rRNA processing; S-adenosyl-L-methionine; Transferase.
FT CHAIN 1..260
FT /note="Ribosomal RNA small subunit methyltransferase A"
FT /id="PRO_0000101501"
FT BINDING 16
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 18
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 43
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
FT BINDING 64
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 108
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00607"
SQ SEQUENCE 260 AA; 29903 MW; 7E0B2941727A4727 CRC64;
MVKKNTFFAN KNLGQNFLVD SEVINRIINV INPKSHDFMI EIGPGLGALT YPICKILHKL
FVIEHDNNLG TRLLKDISNI EVFVEDVLKF NFLNLINNSF KSVRIIGNLP YNISIPILFY
LFKFHNNIID MNFMFQKEVA SKLLAIPGTK SYSRLSIIAQ YYCDIDFLFD VVAQSFYPIP
KVTSSFVRLV PRKVFNLYVR DINQLSNVTA LAFQQRRKIV KNSLSSLFND DALRKLGIDP
LLRAENLSVK QYCLLSNHVC
