ID   TRMB_MYCAP              Reviewed;         205 AA.
AC   A5IZB9;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   26-JUN-2007, sequence version 1.
DT   27-MAR-2024, entry version 95.
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=MAG6780;
OS   Mycoplasmopsis agalactiae (strain NCTC 10123 / CIP 59.7 / PG2) (Mycoplasma
OS   agalactiae).
OC   Bacteria; Mycoplasmatota; Mycoplasmoidales; Metamycoplasmataceae;
OC   Mycoplasmopsis.
OX   NCBI_TaxID=347257;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NCTC 10123 / CIP 59.7 / PG2;
RX   PubMed=17511520; DOI=10.1371/journal.pgen.0030075;
RA   Sirand-Pugnet P., Lartigue C., Marenda M., Jacob D., Barre A., Barbe V.,
RA   Schenowitz C., Mangenot S., Couloux A., Segurens B., de Daruvar A.,
RA   Blanchard A., Citti C.;
RT   "Being pathogenic, plastic, and sexual while living with a nearly minimal
RT   bacterial genome.";
RL   PLoS Genet. 3:744-758(2007).
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; CU179680; CAL59378.1; -; Genomic_DNA.
DR   RefSeq; WP_011949831.1; NC_009497.1.
DR   AlphaFoldDB; A5IZB9; -.
DR   SMR; A5IZB9; -.
DR   STRING; 347257.MAG6780; -.
DR   KEGG; maa:MAG6780; -.
DR   HOGENOM; CLU_050910_2_1_14; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000007065; 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..205
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_1000136356"
FT   REGION          115..120
FT                   /note="Interaction with RNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   ACT_SITE        109
FT                   /evidence="ECO:0000250"
FT   BINDING         36
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         61
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         88
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         109
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         113
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         145
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         183..186
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   205 AA;  24047 MW;  EC201514A04AA1BE CRC64;
     MRLRYDKNAE GKLEMFNYLI KQGDSKILLD DKTVLEIGMG KGEMIVELAK AHPELNFIGL
     EKYPTVAAKC IKKANEYNLS NFKILIDDAF KVDEIFEGQC KVIWLTFSDP WPKARHEKRR
     LTHPLFLEKY RKILDKDGIL KFKSDNDGLY EFSLSSLQNS NWRIIDHGID LHNSKYNENN
     YQTGYERKWS ARGKKINYIF AQKGE
//