ID   TRMB_CAMJR              Reviewed;         392 AA.
AC   Q5HTI5;
DT   04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   27-MAR-2024, entry version 96.
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};
GN   OrderedLocusNames=CJE1414;
OS   Campylobacter jejuni (strain RM1221).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Campylobacteraceae; Campylobacter.
OX   NCBI_TaxID=195099;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RM1221;
RX   PubMed=15660156; DOI=10.1371/journal.pbio.0030015;
RA   Fouts D.E., Mongodin E.F., Mandrell R.E., Miller W.G., Rasko D.A.,
RA   Ravel J., Brinkac L.M., DeBoy R.T., Parker C.T., Daugherty S.C.,
RA   Dodson R.J., Durkin A.S., Madupu R., Sullivan S.A., Shetty J.U.,
RA   Ayodeji M.A., Shvartsbeyn A., Schatz M.C., Badger J.H., Fraser C.M.,
RA   Nelson K.E.;
RT   "Major structural differences and novel potential virulence mechanisms from
RT   the genomes of multiple Campylobacter species.";
RL   PLoS Biol. 3:72-85(2005).
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; CP000025; AAW35733.1; -; Genomic_DNA.
DR   RefSeq; WP_011049923.1; NC_003912.7.
DR   AlphaFoldDB; Q5HTI5; -.
DR   SMR; Q5HTI5; -.
DR   KEGG; cjr:CJE1414; -.
DR   HOGENOM; CLU_041532_0_0_7; -.
DR   UniPathway; UPA00989; -.
DR   GO; GO:0008176; F:tRNA (guanine(46)-N7)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   CDD; cd02440; AdoMet_MTases; 1.
DR   Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 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   NCBIfam; TIGR00091; tRNA (guanosine(46)-N7)-methyltransferase TrmB; 1.
DR   PANTHER; PTHR23417; 3-DEOXY-D-MANNO-OCTULOSONIC-ACID TRANSFERASE/TRNA GUANINE-N 7 - -METHYLTRANSFERASE; 1.
DR   PANTHER; PTHR23417:SF14; PPR_LONG DOMAIN-CONTAINING PROTEIN; 1.
DR   Pfam; PF02390; Methyltransf_4; 1.
DR   SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 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..392
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000229159"
FT   BINDING         123
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         148
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         175
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         201
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         231
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   392 AA;  46215 MW;  5F83DF8BC97AE94D CRC64;
     MPNFKSKKIK EINLPYSKDD VEFLWLAKND NVSLIYTKVQ EESFFLQIKK AQNGFVIKGD
     KHTKPSKIGY LQKALKIFKE GFCEDIINEA FGLKNNALIE KTPFIVDNFD ELLSRLQGKI
     YIEIGFGSGR HLLYQAKENP NVLILGVEIY NPALTQVAKL AKAQNVNNIL LIQSDARLLL
     SVLKSKSVEK IFLHFPVPWD KKPHRRVIGK DFCKECARVL TQNGRFELRT DSFEYFNFTL
     EQFLTFPVPK FSLRKNENLE ISSKYEDRWK KQEKNIYDLW VWNFNQECKN YELNEFNLSS
     VEFSKEDLKK IEQNFKNITI KKDDFFLHFE SIYKQDENLL LKVAFGAFNK PEHCYLHLDK
     TIDFAFKEPF KIQENIKAIN ELKEILKVQF KI
//