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Database: UniProt
Entry: A4AN88_MARSH
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Original site: A4AN88_MARSH 
ID   A4AN88_MARSH            Unreviewed;       289 AA.
AC   A4AN88;
DT   03-APR-2007, integrated into UniProtKB/TrEMBL.
DT   03-APR-2007, sequence version 1.
DT   24-JAN-2024, entry version 92.
DE   RecName: Full=Ribosomal RNA small subunit methyltransferase A {ECO:0000256|HAMAP-Rule:MF_00607};
DE            EC=2.1.1.182 {ECO:0000256|HAMAP-Rule:MF_00607};
DE   AltName: Full=16S rRNA (adenine(1518)-N(6)/adenine(1519)-N(6))-dimethyltransferase {ECO:0000256|HAMAP-Rule:MF_00607};
DE   AltName: Full=16S rRNA dimethyladenosine transferase {ECO:0000256|HAMAP-Rule:MF_00607};
DE   AltName: Full=16S rRNA dimethylase {ECO:0000256|HAMAP-Rule:MF_00607};
DE   AltName: Full=S-adenosylmethionine-6-N', N'-adenosyl(rRNA) dimethyltransferase {ECO:0000256|HAMAP-Rule:MF_00607};
GN   Name=rsmA {ECO:0000256|HAMAP-Rule:MF_00607};
GN   Synonyms=ksgA {ECO:0000256|HAMAP-Rule:MF_00607};
GN   OrderedLocusNames=FB2170_04215 {ECO:0000313|EMBL:EAR02460.1};
OS   Maribacter sp. (strain HTCC2170 / KCCM 42371).
OC   Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC   Flavobacteriaceae; Maribacter.
OX   NCBI_TaxID=313603 {ECO:0000313|EMBL:EAR02460.1, ECO:0000313|Proteomes:UP000001602};
RN   [1] {ECO:0000313|EMBL:EAR02460.1, ECO:0000313|Proteomes:UP000001602}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HTCC2170 / KCCM 42371 {ECO:0000313|Proteomes:UP000001602};
RX   PubMed=21037013; DOI=10.1128/JB.01207-10;
RA   Oh H.M., Kang I., Yang S.J., Jang Y., Vergin K.L., Giovannoni S.J.,
RA   Cho J.C.;
RT   "Complete genome sequence of strain HTCC2170, a novel member of the genus
RT   Maribacter in the family Flavobacteriaceae.";
RL   J. Bacteriol. 193:303-304(2011).
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:0000256|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:0000256|HAMAP-Rule:MF_00607};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|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:0000256|HAMAP-Rule:MF_00607}.
CC   -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {ECO:0000256|HAMAP-Rule:MF_00607}.
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DR   EMBL; CP002157; EAR02460.1; -; Genomic_DNA.
DR   RefSeq; WP_013305527.1; NC_014472.1.
DR   AlphaFoldDB; A4AN88; -.
DR   STRING; 313603.FB2170_04215; -.
DR   KEGG; fbc:FB2170_04215; -.
DR   eggNOG; COG0030; Bacteria.
DR   HOGENOM; CLU_041220_0_1_10; -.
DR   OMA; KEEEPYF; -.
DR   OrthoDB; 9814755at2; -.
DR   Proteomes; UP000001602; 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-UniRule.
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; 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; PS51689; SAM_RNA_A_N6_MT; 1.
PE   3: Inferred from homology;
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00607};
KW   Methyltransferase {ECO:0000256|ARBA:ARBA00022603, ECO:0000256|HAMAP-
KW   Rule:MF_00607}; Reference proteome {ECO:0000313|Proteomes:UP000001602};
KW   RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|HAMAP-
KW   Rule:MF_00607};
KW   rRNA processing {ECO:0000256|ARBA:ARBA00022552, ECO:0000256|HAMAP-
KW   Rule:MF_00607};
KW   S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691, ECO:0000256|HAMAP-
KW   Rule:MF_00607};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW   Rule:MF_00607}.
FT   DOMAIN          41..220
FT                   /note="Ribosomal RNA adenine methylase transferase N-
FT                   terminal"
FT                   /evidence="ECO:0000259|SMART:SM00650"
FT   REGION          1..26
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..24
FT                   /note="Basic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         34
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00607,
FT                   ECO:0000256|PROSITE-ProRule:PRU01026"
FT   BINDING         36
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00607,
FT                   ECO:0000256|PROSITE-ProRule:PRU01026"
FT   BINDING         61
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00607,
FT                   ECO:0000256|PROSITE-ProRule:PRU01026"
FT   BINDING         82
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|PROSITE-ProRule:PRU01026"
FT   BINDING         115
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00607,
FT                   ECO:0000256|PROSITE-ProRule:PRU01026"
FT   BINDING         135
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00607,
FT                   ECO:0000256|PROSITE-ProRule:PRU01026"
SQ   SEQUENCE   289 AA;  32869 MW;  4EDDCA32B7D213F0 CRC64;
     MGKRKKKSSG SYKKNKKHYS EKGPVKAKKH LGQHFLKDES IAKQIAETLS FVGYKNVIEI
     GPGTGVLTKY LLQNEIDLVA MDLDSESIVY LNNNFALEHP EILGKKSSLK VVEADFLKYN
     LGLLFDSEPF AITGNFPYNI STQIVFKMLE LKAQVPEFSG MFQKEVAERI CASEGNKTYG
     ILSVLTQAFY NADYLFTVEP EVFDPPPKVH SGVMRLVRKD DFELGCDERL FFRVVKTAFN
     QRRKTLRNSL KSFDLSNILK EDAIFDQRPE QLTVSEFIEL AKKIADDTI
//
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