ID   TRMB_BOMMO              Reviewed;         236 AA.
AC   Q1HPU2;
DT   05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT   13-JUN-2006, sequence version 1.
DT   03-AUG-2022, entry version 71.
DE   RecName: Full=tRNA (guanine-N(7)-)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_03055};
DE            EC=2.1.1.33 {ECO:0000255|HAMAP-Rule:MF_03055};
DE   AltName: Full=tRNA (guanine(46)-N(7))-methyltransferase {ECO:0000255|HAMAP-Rule:MF_03055};
DE   AltName: Full=tRNA(m7G46)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_03055};
OS   Bombyx mori (Silk moth).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC   Neoptera; Endopterygota; Lepidoptera; Glossata; Ditrysia; Bombycoidea;
OC   Bombycidae; Bombycinae; Bombyx.
OX   NCBI_TaxID=7091;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RA   Niu B.L., Meng Z.Q., Weng H.B., Shen W.F., He L.H., Zheng K.F., Ye S.T.,
RA   Lin T.B., Chen J.E.;
RT   "Blast silkworm EST database for functional genes.";
RL   Submitted (MAR-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the formation of N(7)-methylguanine at position 46
CC       (m7G46) in tRNA. {ECO:0000255|HAMAP-Rule:MF_03055}.
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_03055};
CC   -!- PATHWAY: tRNA modification; N(7)-methylguanine-tRNA biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_03055}.
CC   -!- SUBCELLULAR LOCATION: Nucleus {ECO:0000255|HAMAP-Rule:MF_03055}.
CC   -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC       superfamily. TrmB family. {ECO:0000255|HAMAP-Rule:MF_03055}.
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DR   EMBL; DQ443310; ABF51399.1; -; mRNA.
DR   RefSeq; NP_001040444.1; NM_001046979.1.
DR   AlphaFoldDB; Q1HPU2; -.
DR   SMR; Q1HPU2; -.
DR   STRING; 7091.BGIBMGA006783-TA; -.
DR   GeneID; 732983; -.
DR   KEGG; bmor:732983; -.
DR   eggNOG; KOG3115; Eukaryota.
DR   HOGENOM; CLU_050910_3_2_1; -.
DR   OrthoDB; 1417652at2759; -.
DR   UniPathway; UPA00989; -.
DR   Proteomes; UP000005204; Unassembled WGS sequence.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0008176; F:tRNA (guanine-N7-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_03055; tRNA_methyltr_TrmB_euk; 1.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   InterPro; IPR025763; Trm8_euk.
DR   InterPro; IPR003358; tRNA_(Gua-N-7)_MeTrfase_Trmb.
DR   PANTHER; PTHR23417; PTHR23417; 1.
DR   PANTHER; PTHR23417:SF16; PTHR23417:SF16; 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   2: Evidence at transcript level;
KW   Methyltransferase; Nucleus; Reference proteome; RNA-binding;
KW   S-adenosyl-L-methionine; Transferase; tRNA processing; tRNA-binding.
FT   CHAIN           1..236
FT                   /note="tRNA (guanine-N(7)-)-methyltransferase"
FT                   /id="PRO_0000370566"
FT   ACT_SITE        133
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT   BINDING         54
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT   BINDING         77..78
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT   BINDING         110..111
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT   BINDING         130
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT   BINDING         208..210
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
SQ   SEQUENCE   236 AA;  27802 MW;  33A20A8B8D556ECE CRC64;
     MALPQKKYYR QRAHSNPIAD HCFDYPSHPD DYDWTPLYPI ISEKPNQVEF LDVGCGYGGL
     LVALSPMFPS NLMLGSEIRV KVSDYVNDRI KALRVQYPDQ YQNVAVLRTN AMKYLPNFFH
     KGQLKKMFFL YPDPHFKKAK HKWRIINKWL LSEYAYVLCE QGIVYTITDV KDLNEWMVAH
     FEEHPLFESV PEEELKEDPI IEKLYESTEE GQKVTRNNGE KFLAVFRRIA DKTKTN