TRMB_YEAS1
ID TRMB_YEAS1 Reviewed; 286 AA.
AC B3LH81;
DT 05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 02-SEP-2008, sequence version 1.
DT 03-AUG-2022, entry version 55.
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=Transfer RNA methyltransferase 8 {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};
GN Name=TRM8 {ECO:0000255|HAMAP-Rule:MF_03055}; ORFNames=SCRG_00691;
OS Saccharomyces cerevisiae (strain RM11-1a) (Baker's yeast).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Saccharomycetaceae; Saccharomyces.
OX NCBI_TaxID=285006;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RM11-1a;
RG The Broad Institute Genome Sequencing Platform;
RA Birren B.W., Lander E.S., Galagan J.E., Nusbaum C., Devon K., Cuomo C.,
RA Jaffe D.B., Butler J., Alvarez P., Gnerre S., Grabherr M., Kleber M.,
RA Mauceli E.W., Brockman W., MacCallum I.A., Rounsley S., Young S.K.,
RA LaButti K., Pushparaj V., DeCaprio D., Crawford M., Koehrsen M., Engels R.,
RA Montgomery P., Pearson M., Howarth C., Larson L., Luoma S., White J.,
RA O'Leary S., Kodira C.D., Zeng Q., Yandava C., Alvarado L., Pratt S.,
RA Kruglyak L.;
RT "Annotation of the Saccharomyces cerevisiae RM11-1a genome.";
RL Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Methyltransferase that catalyzes the formation of N(7)-
CC methylguanine at position 46 (m7G46) in tRNA, a modification required
CC to maintain stability of tRNAs; its absence resulting in tRNA decay.
CC Both the D-stem and T-stem structures of tRNAs are required for
CC efficient methyltransferase activity. {ECO:0000255|HAMAP-
CC 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 -!- SUBUNIT: Forms a complex with TRM82. {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; CH408043; EDV08460.1; -; Genomic_DNA.
DR AlphaFoldDB; B3LH81; -.
DR SMR; B3LH81; -.
DR PRIDE; B3LH81; -.
DR EnsemblFungi; EDV08460; EDV08460; SCRG_00691.
DR HOGENOM; CLU_050910_3_1_1; -.
DR UniPathway; UPA00989; -.
DR Proteomes; UP000008335; 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 3: Inferred from homology;
KW Methyltransferase; Nucleus; Phosphoprotein; RNA-binding;
KW S-adenosyl-L-methionine; Transferase; tRNA processing; tRNA-binding.
FT CHAIN 1..286
FT /note="tRNA (guanine-N(7)-)-methyltransferase"
FT /id="PRO_0000370607"
FT ACT_SITE 184
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT BINDING 103
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT BINDING 126..127
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT BINDING 161..162
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT BINDING 181
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT BINDING 259..261
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03055"
FT MOD_RES 7
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:Q12009"
FT MOD_RES 59
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:Q12009"
SQ SEQUENCE 286 AA; 33391 MW; 0280B9A7B02C85B7 CRC64;
MKAKPLSQDP GSKRYAYRIN KEENRKELKH VKINESSLVQ EGQKIDLPKK RYYRQRAHSN
PFSDHQLEYP VSPQDMDWSK LYPYYKNAEN GQMTKKVTIA DIGCGFGGLM IDLSPAFPED
LILGMEIRVQ VTNYVEDRII ALRNNTASKH GFQNINVLRG NAMKFLPNFF EKGQLSKMFF
CFPDPHFKQR KHKARIITNT LLSEYAYVLK EGGVVYTITD VKDLHEWMVK HLEEHPLFER
LSKEWEENDE CVKIMRNATE EGKKVERKKG DKFVACFTRL PTPAIL
