ID   TRMB_CHLCV              Reviewed;         224 AA.
AC   P59718;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   16-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 103.
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=CCA_00775;
OS   Chlamydia caviae (strain ATCC VR-813 / DSM 19441 / 03DC25 / GPIC)
OS   (Chlamydophila caviae).
OC   Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC   Chlamydia/Chlamydophila group; Chlamydia.
OX   NCBI_TaxID=227941;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-813 / DSM 19441 / 03DC25 / GPIC;
RX   PubMed=12682364; DOI=10.1093/nar/gkg321;
RA   Read T.D., Myers G.S.A., Brunham R.C., Nelson W.C., Paulsen I.T.,
RA   Heidelberg J.F., Holtzapple E.K., Khouri H.M., Federova N.B., Carty H.A.,
RA   Umayam L.A., Haft D.H., Peterson J.D., Beanan M.J., White O.,
RA   Salzberg S.L., Hsia R.-C., McClarty G., Rank R.G., Bavoil P.M.,
RA   Fraser C.M.;
RT   "Genome sequence of Chlamydophila caviae (Chlamydia psittaci GPIC):
RT   examining the role of niche-specific genes in the evolution of the
RT   Chlamydiaceae.";
RL   Nucleic Acids Res. 31:2134-2147(2003).
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; AE015925; AAP05516.1; -; Genomic_DNA.
DR   AlphaFoldDB; P59718; -.
DR   SMR; P59718; -.
DR   STRING; 227941.CCA_00775; -.
DR   EnsemblBacteria; AAP05516; AAP05516; CCA_00775.
DR   KEGG; cca:CCA_00775; -.
DR   eggNOG; COG0220; Bacteria.
DR   HOGENOM; CLU_050910_2_0_0; -.
DR   OMA; GHALEYC; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000002193; Chromosome.
DR   GO; GO:0008176; F:tRNA (guanine-N7-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.150; -; 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   PANTHER; PTHR23417; PTHR23417; 1.
DR   Pfam; PF02390; Methyltransf_4; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00091; TIGR00091; 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..224
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000171314"
FT   ACT_SITE        129
FT                   /evidence="ECO:0000250"
FT   BINDING         54
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         79
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         129
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         133
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
FT   BINDING         165
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01057"
SQ   SEQUENCE   224 AA;  26984 MW;  A7E0546ED3DA82E9 CRC64;
     MKPQNLKVPF FWEERSTEIK DNVLYIPNHY FKHDQFIMPS WEEFFGNNNP ISCELCSGNG
     DWVVSQAQNM PQMNWIAVEK RFDRVRKIWS KMHNFQVSNL RIVCGEAQTF FRHYLKNEIL
     QRIVVNFPDP WPKSRHRKHR LFQDEFMNDV VRVLVESGIL VLATDDKNYL VEAIKMMRQC
     LLPTIEDPYY CKVLDNYGDS WFERLWRSKG QEIFYTEFVK KVGI