ID B9YAX1_9FIRM Unreviewed; 347 AA.
AC B9YAX1;
DT 14-APR-2009, integrated into UniProtKB/TrEMBL.
DT 14-APR-2009, sequence version 1.
DT 24-JAN-2024, entry version 84.
DE RecName: Full=Queuine tRNA-ribosyltransferase {ECO:0000256|HAMAP-Rule:MF_00168};
DE EC=2.4.2.29 {ECO:0000256|HAMAP-Rule:MF_00168};
DE AltName: Full=Guanine insertion enzyme {ECO:0000256|HAMAP-Rule:MF_00168};
DE AltName: Full=tRNA-guanine transglycosylase {ECO:0000256|HAMAP-Rule:MF_00168};
GN Name=tgt {ECO:0000256|HAMAP-Rule:MF_00168,
GN ECO:0000313|EMBL:EEF66897.1};
GN ORFNames=HOLDEFILI_02978 {ECO:0000313|EMBL:EEF66897.1};
OS Holdemania filiformis DSM 12042.
OC Bacteria; Bacillota; Erysipelotrichia; Erysipelotrichales;
OC Erysipelotrichaceae; Holdemania.
OX NCBI_TaxID=545696 {ECO:0000313|EMBL:EEF66897.1, ECO:0000313|Proteomes:UP000005950};
RN [1] {ECO:0000313|EMBL:EEF66897.1, ECO:0000313|Proteomes:UP000005950}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 12042 {ECO:0000313|EMBL:EEF66897.1,
RC ECO:0000313|Proteomes:UP000005950};
RA Fulton L., Clifton S., Fulton B., Xu J., Minx P., Pepin K.H., Johnson M.,
RA Bhonagiri V., Nash W.E., Mardis E.R., Wilson R.K.;
RL Submitted (DEC-2008) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EEF66897.1, ECO:0000313|Proteomes:UP000005950}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 12042 {ECO:0000313|EMBL:EEF66897.1,
RC ECO:0000313|Proteomes:UP000005950};
RA Sudarsanam P., Ley R., Guruge J., Turnbaugh P.J., Mahowald M., Liep D.,
RA Gordon J.;
RT "Draft genome sequence of Holdemania filiformis DSM 12042.";
RL Submitted (FEB-2009) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the base-exchange of a guanine (G) residue with the
CC queuine precursor 7-aminomethyl-7-deazaguanine (PreQ1) at position 34
CC (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp,
CC -Asn, -His and -Tyr). Catalysis occurs through a double-displacement
CC mechanism. The nucleophile active site attacks the C1' of nucleotide 34
CC to detach the guanine base from the RNA, forming a covalent enzyme-RNA
CC intermediate. The proton acceptor active site deprotonates the incoming
CC PreQ1, allowing a nucleophilic attack on the C1' of the ribose to form
CC the product. After dissociation, two additional enzymatic reactions on
CC the tRNA convert PreQ1 to queuine (Q), resulting in the hypermodified
CC nucleoside queuosine (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-
CC yl)amino)methyl)-7-deazaguanosine). {ECO:0000256|HAMAP-Rule:MF_00168}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=7-aminomethyl-7-carbaguanine + guanosine(34) in tRNA = 7-
CC aminomethyl-7-carbaguanosine(34) in tRNA + guanine;
CC Xref=Rhea:RHEA:24104, Rhea:RHEA-COMP:10341, Rhea:RHEA-COMP:10342,
CC ChEBI:CHEBI:16235, ChEBI:CHEBI:58703, ChEBI:CHEBI:74269,
CC ChEBI:CHEBI:82833; EC=2.4.2.29; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00168};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00168};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000256|HAMAP-Rule:MF_00168};
CC -!- PATHWAY: tRNA modification; tRNA-queuosine biosynthesis.
CC {ECO:0000256|HAMAP-Rule:MF_00168}.
CC -!- SUBUNIT: Homodimer. Within each dimer, one monomer is responsible for
CC RNA recognition and catalysis, while the other monomer binds to the
CC replacement base PreQ1. {ECO:0000256|HAMAP-Rule:MF_00168}.
CC -!- SIMILARITY: Belongs to the queuine tRNA-ribosyltransferase family.
CC {ECO:0000256|HAMAP-Rule:MF_00168}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EEF66897.1}.
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DR EMBL; ACCF01000189; EEF66897.1; -; Genomic_DNA.
DR AlphaFoldDB; B9YAX1; -.
DR STRING; 545696.HOLDEFILI_02978; -.
DR eggNOG; COG0343; Bacteria.
DR HOGENOM; CLU_022060_0_1_9; -.
DR UniPathway; UPA00392; -.
DR Proteomes; UP000005950; Unassembled WGS sequence.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0008479; F:tRNA-guanosine(34) queuine transglycosylase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008616; P:queuosine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0101030; P:tRNA-guanine transglycosylation; IEA:InterPro.
DR Gene3D; 3.20.20.105; Queuine tRNA-ribosyltransferase-like; 1.
DR HAMAP; MF_00168; Q_tRNA_Tgt; 1.
DR InterPro; IPR004803; TGT.
DR InterPro; IPR036511; TGT-like_sf.
DR InterPro; IPR002616; tRNA_ribo_trans-like.
DR NCBIfam; TIGR00430; Q_tRNA_tgt; 1.
DR NCBIfam; TIGR00449; tgt_general; 1.
DR PANTHER; PTHR46499; QUEUINE TRNA-RIBOSYLTRANSFERASE; 1.
DR PANTHER; PTHR46499:SF1; QUEUINE TRNA-RIBOSYLTRANSFERASE; 1.
DR Pfam; PF01702; TGT; 1.
DR SUPFAM; SSF51713; tRNA-guanine transglycosylase; 1.
PE 3: Inferred from homology;
KW Glycosyltransferase {ECO:0000256|ARBA:ARBA00022676, ECO:0000256|HAMAP-
KW Rule:MF_00168}; Metal-binding {ECO:0000256|HAMAP-Rule:MF_00168};
KW Queuosine biosynthesis {ECO:0000256|ARBA:ARBA00022785, ECO:0000256|HAMAP-
KW Rule:MF_00168};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00168};
KW tRNA processing {ECO:0000256|ARBA:ARBA00022694, ECO:0000256|HAMAP-
KW Rule:MF_00168}; Zinc {ECO:0000256|HAMAP-Rule:MF_00168}.
FT DOMAIN 1..338
FT /note="tRNA-guanine(15) transglycosylase-like"
FT /evidence="ECO:0000259|Pfam:PF01702"
FT REGION 217..223
FT /note="RNA binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT REGION 241..245
FT /note="RNA binding; important for wobble base 34
FT recognition"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT ACT_SITE 62
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT ACT_SITE 236
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 62..66
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 116
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 159
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 186
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 274
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 276
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 279
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 305
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
SQ SEQUENCE 347 AA; 39427 MW; 66415A25B2A0386F CRC64;
MFMPVGTLAT VKFLSPEEIK ALGAGVILAN TYHLWLRPGE DIVDKAGGVQ KFMNYSGPML
TDSGGFQVFS LADRRKIKEE GVTFKSHLDG STLFLSPEKS IQIQNKIGAD IIMSFDECAP
YPCSYDYMKN SVERTLRWAK RGKDAHQRPE EQALFGIVQG GEYQDLREMC AKTLAEMDFP
GYSIGGTSVG ESKETMYKMI DYSVKYLPWE KPRYLMGVGS VDAILEGILR NVDMFDCVLP
TRIARHGTLM TSQGRVNIKK QEYEEDFGPL DPECDCYTCK NYSRAYLRHL FRCNEGLGSR
LMSIHNLRFL LSLTEQARKA IREDRFGDFK AELFKKYNLN SVDSRGF
//
