ID   TRMB_MESH2              Reviewed;         201 AA.
AC   Q600J2;
DT   15-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   23-NOV-2004, sequence version 1.
DT   27-MAR-2024, entry version 107.
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=mhp463;
OS   Mesomycoplasma hyopneumoniae (strain 232) (Mycoplasma hyopneumoniae).
OC   Bacteria; Mycoplasmatota; Mycoplasmoidales; Metamycoplasmataceae;
OC   Mesomycoplasma.
OX   NCBI_TaxID=295358;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=232;
RX   PubMed=15489423; DOI=10.1128/jb.186.21.7123-7133.2004;
RA   Minion F.C., Lefkowitz E.J., Madsen M.L., Cleary B.J., Swartzell S.M.,
RA   Mahairas G.G.;
RT   "The genome sequence of Mycoplasma hyopneumoniae strain 232, the agent of
RT   swine mycoplasmosis.";
RL   J. Bacteriol. 186:7123-7133(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; AE017332; AAV27897.1; -; Genomic_DNA.
DR   RefSeq; WP_011206297.1; NC_006360.1.
DR   AlphaFoldDB; Q600J2; -.
DR   SMR; Q600J2; -.
DR   GeneID; 57101341; -.
DR   KEGG; mhy:mhp463; -.
DR   eggNOG; COG0220; Bacteria.
DR   HOGENOM; CLU_050910_2_1_14; -.
DR   PhylomeDB; Q600J2; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000006822; 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..201
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000171353"
FT   ACT_SITE        106
FT                   /evidence="ECO:0000250"
FT   BINDING         33
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         58
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         85
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         106
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         110
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         142
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         180..183
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   201 AA;  23700 MW;  543FDC3C06B79D70 CRC64;
     MRLRNIPDAL ERIQNQNLLV KTPWNIDDSW IIEIGMGKGK MISQLAFDNP NKNFLGVEKY
     PSAAVKSIKY VKKYNLSNFF ILISDAKDLL DQIKGKASTI WLTFPDPWPK NRHYKRRLTY
     KDFLKIYANL LVKDGILKLK TDNLKFFEFS IESLKENGWK ITYQTNDLHN SLVNSSNIKT
     TYEEKWVNLN YKIHYLEAIF I
//