ID TRM5_GIAIC Reviewed; 447 AA.
AC A8B4Q0;
DT 14-DEC-2011, integrated into UniProtKB/Swiss-Prot.
DT 13-NOV-2007, sequence version 1.
DT 24-JAN-2024, entry version 53.
DE RecName: Full=tRNA (guanine(37)-N1)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_03152};
DE EC=2.1.1.228 {ECO:0000255|HAMAP-Rule:MF_03152};
DE AltName: Full=M1G-methyltransferase {ECO:0000255|HAMAP-Rule:MF_03152};
DE AltName: Full=tRNA [GM37] methyltransferase {ECO:0000255|HAMAP-Rule:MF_03152};
DE AltName: Full=tRNA methyltransferase 5 homolog {ECO:0000255|HAMAP-Rule:MF_03152};
GN ORFNames=GL50803_4164;
OS Giardia intestinalis (strain ATCC 50803 / WB clone C6) (Giardia lamblia).
OC Eukaryota; Metamonada; Diplomonadida; Hexamitidae; Giardiinae; Giardia.
OX NCBI_TaxID=184922;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 50803 / WB clone C6;
RX PubMed=17901334; DOI=10.1126/science.1143837;
RA Morrison H.G., McArthur A.G., Gillin F.D., Aley S.B., Adam R.D.,
RA Olsen G.J., Best A.A., Cande W.Z., Chen F., Cipriano M.J., Davids B.J.,
RA Dawson S.C., Elmendorf H.G., Hehl A.B., Holder M.E., Huse S.M., Kim U.U.,
RA Lasek-Nesselquist E., Manning G., Nigam A., Nixon J.E.J., Palm D.,
RA Passamaneck N.E., Prabhu A., Reich C.I., Reiner D.S., Samuelson J.,
RA Svard S.G., Sogin M.L.;
RT "Genomic minimalism in the early diverging intestinal parasite Giardia
RT lamblia.";
RL Science 317:1921-1926(2007).
CC -!- FUNCTION: Specifically methylates the N1 position of guanosine-37 in
CC various cytoplasmic and mitochondrial tRNAs. Methylation is not
CC dependent on the nature of the nucleoside 5' of the target nucleoside.
CC This is the first step in the biosynthesis of wybutosine (yW), a
CC modified base adjacent to the anticodon of tRNAs and required for
CC accurate decoding. {ECO:0000255|HAMAP-Rule:MF_03152}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=guanosine(37) in tRNA + S-adenosyl-L-methionine = H(+) + N(1)-
CC methylguanosine(37) in tRNA + S-adenosyl-L-homocysteine;
CC Xref=Rhea:RHEA:36899, Rhea:RHEA-COMP:10145, Rhea:RHEA-COMP:10147,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:73542, ChEBI:CHEBI:74269; EC=2.1.1.228;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_03152};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_03152}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion matrix {ECO:0000255|HAMAP-
CC Rule:MF_03152}. Nucleus {ECO:0000255|HAMAP-Rule:MF_03152}. Cytoplasm
CC {ECO:0000255|HAMAP-Rule:MF_03152}. Note=Predominantly in the
CC mitochondria and in the nucleus. {ECO:0000255|HAMAP-Rule:MF_03152}.
CC -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC superfamily. TRM5/TYW2 family. {ECO:0000305}.
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DR EMBL; AACB02000002; EDO81986.1; -; Genomic_DNA.
DR RefSeq; XP_001709660.1; XM_001709608.1.
DR AlphaFoldDB; A8B4Q0; -.
DR SMR; A8B4Q0; -.
DR STRING; 184922.A8B4Q0; -.
DR EnsemblProtists; EDO81986; EDO81986; GL50803_4164.
DR GeneID; 5702584; -.
DR KEGG; gla:GL50803_004164; -.
DR VEuPathDB; GiardiaDB:GL50803_4164; -.
DR HOGENOM; CLU_613160_0_0_1; -.
DR OMA; CFLECFT; -.
DR GO; GO:0005759; C:mitochondrial matrix; IEA:UniProtKB-SubCell.
DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0052906; F:tRNA (guanine(37)-N1)-methyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0030488; P:tRNA methylation; IEA:UniProtKB-UniRule.
DR Gene3D; 3.30.300.110; Met-10+ protein-like domains; 1.
DR Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 1.
DR HAMAP; MF_03152; TRM5; 1.
DR InterPro; IPR030382; MeTrfase_TRM5/TYW2.
DR InterPro; IPR029063; SAM-dependent_MTases_sf.
DR InterPro; IPR025792; tRNA_Gua_MeTrfase_euk.
DR PANTHER; PTHR23245:SF36; TRNA (GUANINE(37)-N1)-METHYLTRANSFERASE; 1.
DR PANTHER; PTHR23245; TRNA METHYLTRANSFERASE; 1.
DR Pfam; PF02475; Met_10; 1.
DR SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
DR PROSITE; PS51684; SAM_MT_TRM5_TYW2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Methyltransferase; Mitochondrion; Nucleus;
KW S-adenosyl-L-methionine; Transferase; tRNA processing.
FT CHAIN 1..447
FT /note="tRNA (guanine(37)-N1)-methyltransferase"
FT /id="PRO_0000414157"
FT BINDING 241
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03152"
FT BINDING 285..286
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03152"
FT BINDING 313..314
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03152"
SQ SEQUENCE 447 AA; 50511 MW; A88DBE14CEC869FB CRC64;
MSHQRPEIFD NFAGAQVMTV DGEPQRDLNQ ARRIVLEMKE PLCRIPEDLR SLLSVTISVY
CIETPSALVS TIIKNMPPEA SIALVTGCRF LAVRDGPRGK TVTVLSTAFL SGLDESVTQQ
LFIHADTLLL TPEARSRISL LQDIIEDPPT SFETVGHIAH YNLREAHLPY RYFIGAVTCE
KEPAITTVIT KIDTVQSQYR TYNFELIGGV PRYDVKLVQD GITYSFNYTK VYWNSRLSHE
HLSLAQHINQ TICPNDLVLD GTCGIGPHAL LLAKRFNFTN LICNDLNPDA YKSLKMNVRI
NKAENAITCF NEDVSSLLRR LLPETNLKAV IFSLPELSIN LLQAMKGVPD IYCFLECFTR
APPHLAYYDL LLRCSESLLD TKVCTGIQQA LSDIEKVAEN KELIDLLIAC YETFEVKEIR
TVSTNKFMYR VTLKINEQKE TVKVLKK
//
