ID D2QNC2_SPILD Unreviewed; 271 AA.
AC D2QNC2;
DT 02-MAR-2010, integrated into UniProtKB/TrEMBL.
DT 02-MAR-2010, sequence version 1.
DT 27-MAR-2024, entry version 78.
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=Slin_3300 {ECO:0000313|EMBL:ADB39311.1};
OS Spirosoma linguale (strain ATCC 33905 / DSM 74 / LMG 10896 / Claus 1).
OC Bacteria; Bacteroidota; Cytophagia; Cytophagales; Cytophagaceae; Spirosoma.
OX NCBI_TaxID=504472 {ECO:0000313|EMBL:ADB39311.1, ECO:0000313|Proteomes:UP000002028};
RN [1] {ECO:0000313|Proteomes:UP000002028}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33905 / DSM 74 / LMG 10896
RC {ECO:0000313|Proteomes:UP000002028};
RG US DOE Joint Genome Institute (JGI-PGF);
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Kyrpides N., Mavromatis K.,
RA Mikhailova N., Ovchinnikova G., Saunders E., Brettin T., Detter J.C.,
RA Han C., Larimer F., Land M., Hauser L., Markowitz V., Cheng J.-F.,
RA Hugenholtz P., Woyke T., Wu D., Tindal B., Schutze A., Schneider S.,
RA Goker M., Klenk H.-P., Eisen J.A.;
RT "The complete chromosome of Spirosoma linguale DSM 74.";
RL Submitted (SEP-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ADB39311.1, ECO:0000313|Proteomes:UP000002028}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33905 / DSM 74 / LMG 10896
RC {ECO:0000313|Proteomes:UP000002028};
RX PubMed=21304700;
RA Lail K., Sikorski J., Saunders E., Lapidus A., Glavina Del Rio T.,
RA Copeland A., Tice H., Cheng J.-F., Lucas S., Nolan M., Bruce D.,
RA Goodwin L., Pitluck S., Ivanova N., Mavromatis K., Ovchinnikova G.,
RA Pati A., Chen A., Palaniappan K., Land M., Hauser L., Chang Y.-J.,
RA Jeffries C.D., Chain P., Brettin T., Detter J.C., Schuetze A., Rohde M.,
RA Tindall B.J., Goeker M., Bristow J., Eisen J.A., Markowitz V.,
RA Hugenholtz P., Kyrpides N.C., Klenk H.-P., Chen F.;
RT "Complete genome sequence of Spirosoma linguale type strain (1).";
RL Stand. Genomic Sci. 2:176-185(2010).
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}.
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DR EMBL; CP001769; ADB39311.1; -; Genomic_DNA.
DR AlphaFoldDB; D2QNC2; -.
DR STRING; 504472.Slin_3300; -.
DR KEGG; sli:Slin_3300; -.
DR eggNOG; COG0030; Bacteria.
DR HOGENOM; CLU_041220_0_1_10; -.
DR Proteomes; UP000002028; 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 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; 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};
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 19..201
FT /note="Ribosomal RNA adenine methylase transferase N-
FT terminal"
FT /evidence="ECO:0000259|SMART:SM00650"
FT BINDING 12
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 14
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 45
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 67
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 91
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 116
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 271 AA; 30248 MW; A858D2847C68C46A CRC64;
MYVKPKKELG QHFLKDLSIA QRIAELLTGH AGADGVPYTK VLEIGPGTGV LTQFLLQNSQ
FDTYVIEIDR ESVEYLKQYV PALEGRILAS DFLNIRPDLL PTKQPDNTEP FAVIGNFPYN
ISTQILFKVL DMRDRVPEVV GMFQREVAQR VASGPGNKDY GILSVLLQAW YDIKYEFTVD
PSVFNPPPKV FSGVISLKRN AVTDLGCDVK KFTQVVKHGF SQRRKTLRNA LKPLSPSEAA
LASPFMDKRA EQLGVAEFVA LTILMSERAE G
//