ID K5B9N2_MYCHD Unreviewed; 407 AA.
AC K5B9N2;
DT 09-JAN-2013, integrated into UniProtKB/TrEMBL.
DT 09-JAN-2013, sequence version 1.
DT 27-MAR-2024, entry version 63.
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:EKF25743.1};
GN ORFNames=C731_0231 {ECO:0000313|EMBL:EKF25743.1}, MHAS_03974
GN {ECO:0000313|EMBL:VCT92247.1};
OS Mycolicibacterium hassiacum (strain DSM 44199 / CIP 105218 / JCM 12690 /
OS 3849) (Mycobacterium hassiacum).
OC Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Mycobacteriaceae;
OC Mycolicibacterium.
OX NCBI_TaxID=1122247 {ECO:0000313|EMBL:EKF25743.1, ECO:0000313|Proteomes:UP000006265};
RN [1] {ECO:0000313|EMBL:EKF25743.1, ECO:0000313|Proteomes:UP000006265}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 44199 {ECO:0000313|EMBL:EKF25743.1}, and DSM 44199 / CIP
RC 105218 / JCM 12690 / 3849 {ECO:0000313|Proteomes:UP000006265};
RX PubMed=23209251; DOI=10.1128/JB.01880-12;
RA Tiago I., Maranha A., Mendes V., Alarico S., Moynihan P.J., Clarke A.J.,
RA Macedo-Ribeiro S., Pereira P.J., Empadinhas N.;
RT "Genome sequence of Mycobacterium hassiacum DSM 44199, a rare source of
RT heat-stable mycobacterial proteins.";
RL J. Bacteriol. 194:7010-7011(2012).
RN [2] {ECO:0000313|EMBL:VCT92247.1}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Mhassiacum {ECO:0000313|EMBL:VCT92247.1};
RA Peiro R., Begona, Cbmso G., Lopez M., Gonzalez S., Sacristan E.,
RA Castillo E.;
RL Submitted (OCT-2018) to the EMBL/GenBank/DDBJ databases.
RN [3] {ECO:0000313|Proteomes:UP000268660}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 44199 / CIP 105218 / JCM 12690 / 3849
RC {ECO:0000313|Proteomes:UP000268660};
RX PubMed=30701245; DOI=10.1128/mra.01522-18;
RA Sanchez M., Blesa A., Sacristan-Horcajada E., Berenguer J.;
RT "Complete genome sequence of Mycolicibacterium hassiacum DSM 44199.";
RL Microbiol. Resour. Announc. 8:e01522-e01522(2019).
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: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00168}.
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DR EMBL; AMRA01000009; EKF25743.1; -; Genomic_DNA.
DR EMBL; LR026975; VCT92247.1; -; Genomic_DNA.
DR RefSeq; WP_005623565.1; NZ_LR026975.1.
DR AlphaFoldDB; K5B9N2; -.
DR STRING; 1122247.GCA_000379865_01881; -.
DR KEGG; mhas:MHAS_03974; -.
DR PATRIC; fig|1122247.3.peg.216; -.
DR eggNOG; COG0343; Bacteria.
DR OrthoDB; 9805417at2; -.
DR UniPathway; UPA00392; -.
DR Proteomes; UP000006265; Unassembled WGS sequence.
DR Proteomes; UP000268660; Chromosome 1.
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|HAMAP-Rule:MF_00168};
KW Reference proteome {ECO:0000313|Proteomes:UP000006265};
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 21..402
FT /note="tRNA-guanine(15) transglycosylase-like"
FT /evidence="ECO:0000259|Pfam:PF01702"
FT ACT_SITE 98
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT ACT_SITE 301
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 98..102
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 177
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 227
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 254
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 339
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 341
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 344
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
FT BINDING 370
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00168"
SQ SEQUENCE 407 AA; 44941 MW; 9C721B5A959BEF44 CRC64;
MQDSSRPAFF TVDTELPGRL GRTGVIRTPH GDIHTPAFVP VGTQATVKAV LPETMKELGA
QAILANAYHL YLQPGPDIVA EAGGLGAFMN WPGPTFTDSG GFQVLSLGAG FRKVLAMDAN
RVQADDVIAK GKERLAHVDD DGVTFRSHLN GSIHRFTPEV SIGIQHKLGA DIIFAFDELT
TLVNTRGYQE RSVRRTHEWA VRCMAEHRRL SEAHPDKPPQ ALFGVVQGAQ YEDLRRAAAR
GLTEIGFDGY GIGGALEKQN LAAIVEWVCS ELPPDKPRHM LGISEPDDLF AAIAAGADTF
DCVSPSRVAR NAALYSPTGR FNITNARFRR DFTPIDDECD CYTCAHYTRA YLHHLFKAKE
LLANTLATIH NERFIIRLVD RIRAAIKAGE FDDLREEVLG RYYGSRR
//
