ID   TRMB_GEOKA              Reviewed;         217 AA.
AC   Q5KW28;
DT   04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 99.
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=GK2823;
OS   Geobacillus kaustophilus (strain HTA426).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus;
OC   Geobacillus thermoleovorans group.
OX   NCBI_TaxID=235909;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HTA426;
RX   PubMed=15576355; DOI=10.1093/nar/gkh970;
RA   Takami H., Takaki Y., Chee G.-J., Nishi S., Shimamura S., Suzuki H.,
RA   Matsui S., Uchiyama I.;
RT   "Thermoadaptation trait revealed by the genome sequence of thermophilic
RT   Geobacillus kaustophilus.";
RL   Nucleic Acids Res. 32:6292-6303(2004).
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; BA000043; BAD77108.1; -; Genomic_DNA.
DR   RefSeq; WP_011232297.1; NC_006510.1.
DR   AlphaFoldDB; Q5KW28; -.
DR   SMR; Q5KW28; -.
DR   STRING; 235909.GK2823; -.
DR   EnsemblBacteria; BAD77108; BAD77108; GK2823.
DR   KEGG; gka:GK2823; -.
DR   eggNOG; COG0220; Bacteria.
DR   HOGENOM; CLU_050910_2_1_9; -.
DR   OMA; WRGAKTA; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000001172; 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; Reference proteome; S-adenosyl-L-methionine;
KW   Transferase; tRNA processing.
FT   CHAIN           1..217
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000229164"
FT   REGION          124..129
FT                   /note="Interaction with RNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   ACT_SITE        118
FT                   /evidence="ECO:0000250"
FT   BINDING         44
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         69
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         96
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         118
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="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         154
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         191..194
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   217 AA;  25042 MW;  B797B5832BD4F5BD CRC64;
     MRLRNKPWAK DKIAAYPQYV IPDPETKRGR WRELFGHDQP LHVEIGTGKG KFITEMAKLH
     PDVNFIGIEL YPSVLVSALD KLIESGLANV KLLNANAKDL TAFFADGEVS RIYLNFSDPW
     PKKRHEKRRL TYRDFLALYD RILAEDGDIH LKTDNQSFFE YSLVSLSQYG FVLASVQLDL
     HQSGMTDNVM TEYEEKFSAK GNRIYRCEAV RPPRRSS