TRMB_LEUCK
ID TRMB_LEUCK Reviewed; 219 AA.
AC B1MZE7;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 29-APR-2008, sequence version 1.
DT 03-AUG-2022, entry version 84.
DE RecName: Full=tRNA (guanine-N(7)-)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01057};
DE EC=2.1.1.33 {ECO:0000255|HAMAP-Rule:MF_01057};
DE AltName: Full=tRNA (guanine(46)-N(7))-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01057};
DE AltName: Full=tRNA(m7G46)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01057};
GN Name=trmB {ECO:0000255|HAMAP-Rule:MF_01057}; OrderedLocusNames=LCK_01072;
OS Leuconostoc citreum (strain KM20).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC Leuconostoc.
OX NCBI_TaxID=349519;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KM20;
RX PubMed=18281406; DOI=10.1128/jb.01862-07;
RA Kim J.F., Jeong H., Lee J.-S., Choi S.-H., Ha M., Hur C.-G., Kim J.-S.,
RA Lee S., Park H.-S., Park Y.-H., Oh T.K.;
RT "Complete genome sequence of Leuconostoc citreum KM20.";
RL J. Bacteriol. 190:3093-3094(2008).
CC -!- FUNCTION: Catalyzes the formation of N(7)-methylguanine at position 46
CC (m7G46) in tRNA. {ECO:0000255|HAMAP-Rule:MF_01057}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=guanosine(46) in tRNA + S-adenosyl-L-methionine = N(7)-
CC methylguanosine(46) in tRNA + S-adenosyl-L-homocysteine;
CC Xref=Rhea:RHEA:42708, Rhea:RHEA-COMP:10188, Rhea:RHEA-COMP:10189,
CC ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:74269,
CC ChEBI:CHEBI:74480; EC=2.1.1.33; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01057};
CC -!- PATHWAY: tRNA modification; N(7)-methylguanine-tRNA biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_01057}.
CC -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC superfamily. TrmB family. {ECO:0000255|HAMAP-Rule:MF_01057}.
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DR EMBL; DQ489736; ACA82899.1; -; Genomic_DNA.
DR RefSeq; WP_004907667.1; NC_010471.1.
DR AlphaFoldDB; B1MZE7; -.
DR SMR; B1MZE7; -.
DR STRING; 349519.LCK_01072; -.
DR EnsemblBacteria; ACA82899; ACA82899; LCK_01072.
DR KEGG; lci:LCK_01072; -.
DR eggNOG; COG0220; Bacteria.
DR HOGENOM; CLU_050910_2_1_9; -.
DR OMA; WRGAKTA; -.
DR OrthoDB; 1025521at2; -.
DR UniPathway; UPA00989; -.
DR Proteomes; UP000002166; Chromosome.
DR GO; GO:0008176; F:tRNA (guanine-N7-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.150; -; 1.
DR HAMAP; MF_01057; tRNA_methyltr_TrmB; 1.
DR InterPro; IPR029063; SAM-dependent_MTases_sf.
DR InterPro; IPR003358; tRNA_(Gua-N-7)_MeTrfase_Trmb.
DR PANTHER; PTHR23417; PTHR23417; 1.
DR Pfam; PF02390; Methyltransf_4; 1.
DR SUPFAM; SSF53335; SSF53335; 1.
DR TIGRFAMs; TIGR00091; TIGR00091; 1.
DR PROSITE; PS51625; SAM_MT_TRMB; 1.
PE 3: Inferred from homology;
KW Methyltransferase; S-adenosyl-L-methionine; Transferase; tRNA processing.
FT CHAIN 1..219
FT /note="tRNA (guanine-N(7)-)-methyltransferase"
FT /id="PRO_1000136354"
FT ACT_SITE 122
FT /evidence="ECO:0000250"
FT BINDING 46
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT BINDING 71
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT BINDING 100
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT BINDING 122
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT BINDING 126
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT BINDING 158
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT BINDING 199..202
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ SEQUENCE 219 AA; 25236 MW; 41292505021702BB CRC64;
MHLRAKPWAT DWLAAHSDIV ITQGRATEQI GQWQKLFAKA QPIHVEIGSG KGQFILGMAL
AHPEINYIGM EIQETAVAIA ARKSFDQVGE LPNLRYIYGN GNGVETYFEK AEVEKIYLNF
SDPWPKTRHE SRRLTYKTFL QSYEAVLPEH GEVEFKTDNR HLFEYSIVSF MNYGMRWATT
DFTLDLHADA EKVIGNVETE YEQKFMAKGQ PIYKIKAHF