ID   TRMB_MYCPU              Reviewed;         203 AA.
AC   Q98R44;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2001, sequence version 1.
DT   27-MAR-2024, entry version 110.
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=MYPU_1660;
OS   Mycoplasmopsis pulmonis (strain UAB CTIP) (Mycoplasma pulmonis).
OC   Bacteria; Mycoplasmatota; Mycoplasmoidales; Metamycoplasmataceae;
OC   Mycoplasmopsis.
OX   NCBI_TaxID=272635;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=UAB CTIP;
RX   PubMed=11353084; DOI=10.1093/nar/29.10.2145;
RA   Chambaud I., Heilig R., Ferris S., Barbe V., Samson D., Galisson F.,
RA   Moszer I., Dybvig K., Wroblewski H., Viari A., Rocha E.P.C., Blanchard A.;
RT   "The complete genome sequence of the murine respiratory pathogen Mycoplasma
RT   pulmonis.";
RL   Nucleic Acids Res. 29:2145-2153(2001).
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; AL445563; CAC13339.1; -; Genomic_DNA.
DR   PIR; F90532; F90532.
DR   RefSeq; WP_010924970.1; NC_002771.1.
DR   AlphaFoldDB; Q98R44; -.
DR   SMR; Q98R44; -.
DR   STRING; 272635.gene:17576751; -.
DR   KEGG; mpu:MYPU_1660; -.
DR   eggNOG; COG0220; Bacteria.
DR   HOGENOM; CLU_050910_2_1_14; -.
DR   BioCyc; MPUL272635:G1GT6-167-MONOMER; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000000528; 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; Reference proteome; S-adenosyl-L-methionine;
KW   Transferase; tRNA processing.
FT   CHAIN           1..203
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000171360"
FT   ACT_SITE        107
FT                   /evidence="ECO:0000250"
FT   BINDING         34
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         59
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         86
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         107
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         111
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         143
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         181..184
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   203 AA;  23782 MW;  2A28826B06FBBE29 CRC64;
     MRLRNNKNAK LELESCENVI KNFPFKVEKN STLEIGMGKG QMLIELAQKN PQKIFVGIEK
     YPTVALIAAK KAKKLELNNF FIIVDDVENA LDFFEGTFDL IWLTFSDPWP KKRHYKRRLT
     YEKFLKIYSK ILSENGLIKL KTDNDDFFQW TLESLEKNGL NIINKTSDLE KSEFAKDNVK
     TSYEQKFVSL GKNINFVEFS FKK
//