ID   TRMB_HELAH              Reviewed;         398 AA.
AC   Q17Y01;
DT   29-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   25-JUL-2006, sequence version 1.
DT   27-MAR-2024, 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};
GN   OrderedLocusNames=Hac_0671;
OS   Helicobacter acinonychis (strain Sheeba).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=382638;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sheeba;
RX   PubMed=16789826; DOI=10.1371/journal.pgen.0020120;
RA   Eppinger M., Baar C., Linz B., Raddatz G., Lanz C., Keller H., Morelli G.,
RA   Gressmann H., Achtman M., Schuster S.C.;
RT   "Who ate whom? Adaptive Helicobacter genomic changes that accompanied a
RT   host jump from early humans to large felines.";
RL   PLoS Genet. 2:1097-1110(2006).
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; AM260522; CAJ99475.1; -; Genomic_DNA.
DR   RefSeq; WP_011577588.1; NC_008229.1.
DR   AlphaFoldDB; Q17Y01; -.
DR   SMR; Q17Y01; -.
DR   STRING; 382638.Hac_0671; -.
DR   KEGG; hac:Hac_0671; -.
DR   eggNOG; COG0220; Bacteria.
DR   HOGENOM; CLU_041532_0_0_7; -.
DR   OrthoDB; 9802090at2; -.
DR   BioCyc; HACI382638:HAC_RS02935-MONOMER; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000000775; Chromosome.
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..398
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000288157"
FT   BINDING         124
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         149
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         176
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         232
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   398 AA;  46494 MW;  FDA930604915A833 CRC64;
     MPHFLAKLDC KPLEYPIISG DFCFHKEFSS LKHPTKSCVY ASFKDHIFLL QKIRRANDFL
     IKSEKATPLK REILKQALRI YAQSFEVILH NLQENSKHAS GKKALDLEDF EDFIKENQAP
     ILMEIGFGSG RHLMELAKNN PTKTCLGIEI YTPSIAQVLK QIELLDLKNL HVLQGDGRLV
     LESIPHHKCE KIFVHFPVPW NDKKHRRVLS ERFLDEALRV LEPNGFLELR TDDTLYFEDS
     LKLALKHFKS EIEIKKNAQI PVVSKYEARW NKLKKDIYDL RIYSLESNET PFNNHAFDFS
     FDTITLNQKS VGMILKTPKI IKEGYFVHVC NIYENKGDFL VELSMGDFDW PMRLFVLSVK
     NQVFYLNKSP LKTLNNHKAH LLLQNILKEF DEYNHCSE
//