tRNA guanosine transglycosylase family protein similar to the catalytic and accessory subunits of TGT, which catalyzes the base-exchange of a guanine (G) residue with queuine (Q) at position 34 in tRNAs with GU(N) anticodons resulting in the hypermodified nucleoside queuosine
Queuine tRNA-ribosyltransferase; This is a family of queuine tRNA-ribosyltransferases EC:2.4.2. ...
13-369
4.17e-45
Queuine tRNA-ribosyltransferase; This is a family of queuine tRNA-ribosyltransferases EC:2.4.2.29, also known as tRNA-guanine transglycosylase and guanine insertion enzyme. Queuine tRNA-ribosyltransferase modifies tRNAs for asparagine, aspartic acid, histidine and tyrosine with queuine. It catalyzes the exchange of guanine-34 at the wobble position with 7-aminomethyl-7-deazaguanine, and the addition of a cyclopentenediol moiety to 7-aminomethyl-7-deazaguanine-34 tRNA; giving a hypermodified base queuine in the wobble position. The aligned region contains a zinc binding motif C-x-C-x2-C-x29-H, and important tRNA and 7-aminomethyl-7deazaguanine binding residues.
The actual alignment was detected with superfamily member pfam01702:
Pssm-ID: 460299 Cd Length: 358 Bit Score: 158.41 E-value: 4.17e-45
Queuine tRNA-ribosyltransferase; This is a family of queuine tRNA-ribosyltransferases EC:2.4.2. ...
13-369
4.17e-45
Queuine tRNA-ribosyltransferase; This is a family of queuine tRNA-ribosyltransferases EC:2.4.2.29, also known as tRNA-guanine transglycosylase and guanine insertion enzyme. Queuine tRNA-ribosyltransferase modifies tRNAs for asparagine, aspartic acid, histidine and tyrosine with queuine. It catalyzes the exchange of guanine-34 at the wobble position with 7-aminomethyl-7-deazaguanine, and the addition of a cyclopentenediol moiety to 7-aminomethyl-7-deazaguanine-34 tRNA; giving a hypermodified base queuine in the wobble position. The aligned region contains a zinc binding motif C-x-C-x2-C-x29-H, and important tRNA and 7-aminomethyl-7deazaguanine binding residues.
Pssm-ID: 460299 Cd Length: 358 Bit Score: 158.41 E-value: 4.17e-45
tRNA-guanine family transglycosylase; Different tRNA-guanine transglycosylases catalyze ...
134-369
4.05e-28
tRNA-guanine family transglycosylase; Different tRNA-guanine transglycosylases catalyze different tRNA base modifications. Two guanine base substitutions by different enzymes described by the model are involved in generating queuosine at position 34 in bacterial tRNAs and archaeosine at position 15 in archaeal tRNAs. This model is designed for fragment searching, so the superfamily is used loosely. [Protein synthesis, tRNA and rRNA base modification]
Pssm-ID: 129541 Cd Length: 367 Bit Score: 112.88 E-value: 4.05e-28
Queuine/archaeosine tRNA-ribosyltransferase [Translation, ribosomal structure and biogenesis]; ...
224-369
2.29e-27
Queuine/archaeosine tRNA-ribosyltransferase [Translation, ribosomal structure and biogenesis]; Queuine/archaeosine tRNA-ribosyltransferase is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 440112 Cd Length: 370 Bit Score: 110.90 E-value: 2.29e-27
Queuine tRNA-ribosyltransferase; This is a family of queuine tRNA-ribosyltransferases EC:2.4.2. ...
13-369
4.17e-45
Queuine tRNA-ribosyltransferase; This is a family of queuine tRNA-ribosyltransferases EC:2.4.2.29, also known as tRNA-guanine transglycosylase and guanine insertion enzyme. Queuine tRNA-ribosyltransferase modifies tRNAs for asparagine, aspartic acid, histidine and tyrosine with queuine. It catalyzes the exchange of guanine-34 at the wobble position with 7-aminomethyl-7-deazaguanine, and the addition of a cyclopentenediol moiety to 7-aminomethyl-7-deazaguanine-34 tRNA; giving a hypermodified base queuine in the wobble position. The aligned region contains a zinc binding motif C-x-C-x2-C-x29-H, and important tRNA and 7-aminomethyl-7deazaguanine binding residues.
Pssm-ID: 460299 Cd Length: 358 Bit Score: 158.41 E-value: 4.17e-45
tRNA-guanine family transglycosylase; Different tRNA-guanine transglycosylases catalyze ...
134-369
4.05e-28
tRNA-guanine family transglycosylase; Different tRNA-guanine transglycosylases catalyze different tRNA base modifications. Two guanine base substitutions by different enzymes described by the model are involved in generating queuosine at position 34 in bacterial tRNAs and archaeosine at position 15 in archaeal tRNAs. This model is designed for fragment searching, so the superfamily is used loosely. [Protein synthesis, tRNA and rRNA base modification]
Pssm-ID: 129541 Cd Length: 367 Bit Score: 112.88 E-value: 4.05e-28
Queuine/archaeosine tRNA-ribosyltransferase [Translation, ribosomal structure and biogenesis]; ...
224-369
2.29e-27
Queuine/archaeosine tRNA-ribosyltransferase [Translation, ribosomal structure and biogenesis]; Queuine/archaeosine tRNA-ribosyltransferase is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 440112 Cd Length: 370 Bit Score: 110.90 E-value: 2.29e-27
tRNA-guanine transglycosylase; This tRNA-guanine transglycosylase (tgt) catalyzes an exchange ...
134-369
1.04e-26
tRNA-guanine transglycosylase; This tRNA-guanine transglycosylase (tgt) catalyzes an exchange for the guanine base at position 34 of many tRNAs; this nucleotide is subsequently modified to queuosine. The Archaea have a closely related enzyme that catalyzes a base exchange for guanine at position 15 in some tRNAs, a site that is subsequently converted to the archaeal-specific modified base archaeosine (7-formamidino-7-deazaguanosine), while Archaeoglobus fulgidus has both enzymes. [Protein synthesis, tRNA and rRNA base modification]
Pssm-ID: 129522 Cd Length: 368 Bit Score: 109.04 E-value: 1.04e-26
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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