tRNA lysidine(34) synthetase ligates lysine onto the cytidine present at position 34 of the AUA codon-specific tRNA(Ile) that contains the anticodon CAU, in an ATP-dependent manner; cytidine is converted to lysidine, thus changing the amino acid specificity of the tRNA from methionine to isoleucine
tRNA(Ile)-lysidine synthetase, N-terminal domain; The only examples in which the wobble ...
24-223
1.63e-67
tRNA(Ile)-lysidine synthetase, N-terminal domain; The only examples in which the wobble position of a tRNA must discriminate between G and A of mRNA are AUA (Ile) vs. AUG (Met) and UGA (stop) vs. UGG (Trp). In all bacteria, the wobble position of the tRNA(Ile) recognizing AUA is lysidine, a lysine derivative of cytidine. This family describes a protein domain found, apparently, in all bacteria in a single copy. Eukaryotic sequences appear to be organellar. The domain archictecture of this protein family is variable; some, including characterized proteins of E. coli and B. subtilis known to be tRNA(Ile)-lysidine synthetase, include a conserved 50-residue domain that many other members lack. This protein belongs to the ATP-binding PP-loop family ( pfam01171). It appears in the literature and protein databases as TilS, YacA, and putative cell cycle protein MesJ (a misnomer). [Protein synthesis, tRNA and rRNA base modification]
:
Pssm-ID: 274129 [Multi-domain] Cd Length: 189 Bit Score: 213.65 E-value: 1.63e-67
tRNA(Ile)-lysidine synthetase, N-terminal domain; The only examples in which the wobble ...
24-223
1.63e-67
tRNA(Ile)-lysidine synthetase, N-terminal domain; The only examples in which the wobble position of a tRNA must discriminate between G and A of mRNA are AUA (Ile) vs. AUG (Met) and UGA (stop) vs. UGG (Trp). In all bacteria, the wobble position of the tRNA(Ile) recognizing AUA is lysidine, a lysine derivative of cytidine. This family describes a protein domain found, apparently, in all bacteria in a single copy. Eukaryotic sequences appear to be organellar. The domain archictecture of this protein family is variable; some, including characterized proteins of E. coli and B. subtilis known to be tRNA(Ile)-lysidine synthetase, include a conserved 50-residue domain that many other members lack. This protein belongs to the ATP-binding PP-loop family ( pfam01171). It appears in the literature and protein databases as TilS, YacA, and putative cell cycle protein MesJ (a misnomer). [Protein synthesis, tRNA and rRNA base modification]
Pssm-ID: 274129 [Multi-domain] Cd Length: 189 Bit Score: 213.65 E-value: 1.63e-67
N-terminal domain of tRNA(Ile)-lysidine synthase and similar proteins; tRNA(Ile)-lysidine ...
24-223
2.24e-62
N-terminal domain of tRNA(Ile)-lysidine synthase and similar proteins; tRNA(Ile)-lysidine synthase (EC 6.3.4.19), also called tRNA(Ile)-2-lysyl-cytidine synthase or tRNA(Ile)-lysidine synthetase, catalyzes the ligation of lysine onto the cytidine present at position 34 of the AUA codon-specific tRNA(Ile) that contains the anticodon CAU, in an ATP-dependent manner. Cytidine is converted to lysidine, thus changing the amino acid specificity of the tRNA from methionine to isoleucine. This subfamily belongs to the adenine nucleotide alpha hydrolase superfamily that also includes N-type ATP PPases and ATP sulfurylases. It forms an alpha/beta/alpha fold which binds to adenosine group. This domain has a strongly conserved motif SGGXD at the N-terminus.
Pssm-ID: 467496 [Multi-domain] Cd Length: 185 Bit Score: 200.51 E-value: 2.24e-62
tRNA(Ile)-lysidine synthase TilS/MesJ [Translation, ribosomal structure and biogenesis]; tRNA ...
22-223
1.61e-46
tRNA(Ile)-lysidine synthase TilS/MesJ [Translation, ribosomal structure and biogenesis]; tRNA(Ile)-lysidine synthase TilS/MesJ is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 439807 [Multi-domain] Cd Length: 235 Bit Score: 160.77 E-value: 1.61e-46
tRNA(Ile)-lysidine synthetase, N-terminal domain; The only examples in which the wobble ...
24-223
1.63e-67
tRNA(Ile)-lysidine synthetase, N-terminal domain; The only examples in which the wobble position of a tRNA must discriminate between G and A of mRNA are AUA (Ile) vs. AUG (Met) and UGA (stop) vs. UGG (Trp). In all bacteria, the wobble position of the tRNA(Ile) recognizing AUA is lysidine, a lysine derivative of cytidine. This family describes a protein domain found, apparently, in all bacteria in a single copy. Eukaryotic sequences appear to be organellar. The domain archictecture of this protein family is variable; some, including characterized proteins of E. coli and B. subtilis known to be tRNA(Ile)-lysidine synthetase, include a conserved 50-residue domain that many other members lack. This protein belongs to the ATP-binding PP-loop family ( pfam01171). It appears in the literature and protein databases as TilS, YacA, and putative cell cycle protein MesJ (a misnomer). [Protein synthesis, tRNA and rRNA base modification]
Pssm-ID: 274129 [Multi-domain] Cd Length: 189 Bit Score: 213.65 E-value: 1.63e-67
N-terminal domain of tRNA(Ile)-lysidine synthase and similar proteins; tRNA(Ile)-lysidine ...
24-223
2.24e-62
N-terminal domain of tRNA(Ile)-lysidine synthase and similar proteins; tRNA(Ile)-lysidine synthase (EC 6.3.4.19), also called tRNA(Ile)-2-lysyl-cytidine synthase or tRNA(Ile)-lysidine synthetase, catalyzes the ligation of lysine onto the cytidine present at position 34 of the AUA codon-specific tRNA(Ile) that contains the anticodon CAU, in an ATP-dependent manner. Cytidine is converted to lysidine, thus changing the amino acid specificity of the tRNA from methionine to isoleucine. This subfamily belongs to the adenine nucleotide alpha hydrolase superfamily that also includes N-type ATP PPases and ATP sulfurylases. It forms an alpha/beta/alpha fold which binds to adenosine group. This domain has a strongly conserved motif SGGXD at the N-terminus.
Pssm-ID: 467496 [Multi-domain] Cd Length: 185 Bit Score: 200.51 E-value: 2.24e-62
tRNA(Ile)-lysidine synthase TilS/MesJ [Translation, ribosomal structure and biogenesis]; tRNA ...
22-223
1.61e-46
tRNA(Ile)-lysidine synthase TilS/MesJ [Translation, ribosomal structure and biogenesis]; tRNA(Ile)-lysidine synthase TilS/MesJ is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 439807 [Multi-domain] Cd Length: 235 Bit Score: 160.77 E-value: 1.61e-46
tRNA-cytidine(32) 2-sulfurtransferase and similar proteins; tRNA-cytidine(32) ...
24-201
2.81e-07
tRNA-cytidine(32) 2-sulfurtransferase and similar proteins; tRNA-cytidine(32) 2-sulfurtransferase, also called two-thiocytidine biosynthesis protein A or tRNA 2-thiocytidine biosynthesis protein TtcA, catalyzes the ATP-dependent 2-thiolation of cytidine in position 32 of tRNA, to form 2-thiocytidine (s(2)C32). TtcA belongs to the adenine nucleotide alpha hydrolase superfamily (AANH) that includes N-type ATP PPases and ATP sulfurylases. It forms an alpha/beta/alpha fold which binds to the adenosine group. This domain has a strongly conserved motif SGGKD at the N-terminus.
Pssm-ID: 467514 [Multi-domain] Cd Length: 187 Bit Score: 50.74 E-value: 2.81e-07
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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Functional characterization of the conserved domain architecture found on the query.
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This image shows a graphical summary of conserved domains identified on the query sequence.
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if a domain or superfamily has been annotated with functional sites (conserved features),
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click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
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To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
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Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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(labeled illustration) Four types of hits can be shown, as available,
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