tRNA nucleotidyltransferase/poly(A) polymerase [Translation, ribosomal structure and ...
43-428
2.26e-91
tRNA nucleotidyltransferase/poly(A) polymerase [Translation, ribosomal structure and biogenesis]; tRNA nucleotidyltransferase/poly(A) polymerase is part of the Pathway/BioSystem: tRNA modification
:
Pssm-ID: 440382 [Multi-domain] Cd Length: 391 Bit Score: 281.70 E-value: 2.26e-91
tRNA nucleotidyltransferase/poly(A) polymerase [Translation, ribosomal structure and ...
43-428
2.26e-91
tRNA nucleotidyltransferase/poly(A) polymerase [Translation, ribosomal structure and biogenesis]; tRNA nucleotidyltransferase/poly(A) polymerase is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 440382 [Multi-domain] Cd Length: 391 Bit Score: 281.70 E-value: 2.26e-91
Nucleotidyltransferase (NT) domain of ClassII CCA-adding enzymes; CCA-adding enzymes add the ...
42-178
5.03e-48
Nucleotidyltransferase (NT) domain of ClassII CCA-adding enzymes; CCA-adding enzymes add the sequence [cytidine(C)-cytidine-adenosine (A)], one nucleotide at a time, onto the 3' end of tRNA, in a template-independent reaction. This Class II group is comprised mainly of eubacterial and eukaryotic enzymes and includes Bacillus stearothermophilus CCAase, Escherichia coli poly(A) polymerase I, human mitochondrial CCAase, and Saccharomyces cerevisiae CCAase (CCA1). CCA-adding enzymes have a single catalytic pocket, which recognizes both ATP and CTP substrates. Included in this subgroup are CC- and A-adding enzymes from various ancient species of bacteria such as Aquifex aeolicus; these enzymes collaborate to add CCA to tRNAs. This family belongs to the Pol beta-like NT superfamily. In the majority of enzymes in this superfamily, two carboxylates, Dx[D/E], together with a third more distal carboxylate, coordinate two divalent metal cations involved in a two-metal ion mechanism of nucleotide addition. These carboxylate residues are fairly well conserved in this family. Escherichia coli CCAase is related to this group but has not been included in this alignment as this enzyme lacks the N-terminal helix conserved in the remainder of the NT superfamily.
Pssm-ID: 143388 [Multi-domain] Cd Length: 139 Bit Score: 160.84 E-value: 5.03e-48
Poly A polymerase head domain; This family includes nucleic acid independent RNA polymerases, ...
59-182
1.04e-39
Poly A polymerase head domain; This family includes nucleic acid independent RNA polymerases, such as Poly(A) polymerase, which adds the poly (A) tail to mRNA EC:2.7.7.19. This family also includes the tRNA nucleotidyltransferase that adds the CCA to the 3' of the tRNA EC:2.7.7.25. This family is part of the nucleotidyltransferase superfamily.
Pssm-ID: 396348 [Multi-domain] Cd Length: 126 Bit Score: 138.57 E-value: 1.04e-39
tRNA nucleotidyltransferase/poly(A) polymerase [Translation, ribosomal structure and ...
43-428
2.26e-91
tRNA nucleotidyltransferase/poly(A) polymerase [Translation, ribosomal structure and biogenesis]; tRNA nucleotidyltransferase/poly(A) polymerase is part of the Pathway/BioSystem: tRNA modification
Pssm-ID: 440382 [Multi-domain] Cd Length: 391 Bit Score: 281.70 E-value: 2.26e-91
Nucleotidyltransferase (NT) domain of ClassII CCA-adding enzymes; CCA-adding enzymes add the ...
42-178
5.03e-48
Nucleotidyltransferase (NT) domain of ClassII CCA-adding enzymes; CCA-adding enzymes add the sequence [cytidine(C)-cytidine-adenosine (A)], one nucleotide at a time, onto the 3' end of tRNA, in a template-independent reaction. This Class II group is comprised mainly of eubacterial and eukaryotic enzymes and includes Bacillus stearothermophilus CCAase, Escherichia coli poly(A) polymerase I, human mitochondrial CCAase, and Saccharomyces cerevisiae CCAase (CCA1). CCA-adding enzymes have a single catalytic pocket, which recognizes both ATP and CTP substrates. Included in this subgroup are CC- and A-adding enzymes from various ancient species of bacteria such as Aquifex aeolicus; these enzymes collaborate to add CCA to tRNAs. This family belongs to the Pol beta-like NT superfamily. In the majority of enzymes in this superfamily, two carboxylates, Dx[D/E], together with a third more distal carboxylate, coordinate two divalent metal cations involved in a two-metal ion mechanism of nucleotide addition. These carboxylate residues are fairly well conserved in this family. Escherichia coli CCAase is related to this group but has not been included in this alignment as this enzyme lacks the N-terminal helix conserved in the remainder of the NT superfamily.
Pssm-ID: 143388 [Multi-domain] Cd Length: 139 Bit Score: 160.84 E-value: 5.03e-48
Poly A polymerase head domain; This family includes nucleic acid independent RNA polymerases, ...
59-182
1.04e-39
Poly A polymerase head domain; This family includes nucleic acid independent RNA polymerases, such as Poly(A) polymerase, which adds the poly (A) tail to mRNA EC:2.7.7.19. This family also includes the tRNA nucleotidyltransferase that adds the CCA to the 3' of the tRNA EC:2.7.7.25. This family is part of the nucleotidyltransferase superfamily.
Pssm-ID: 396348 [Multi-domain] Cd Length: 126 Bit Score: 138.57 E-value: 1.04e-39
Nucleotidyltransferase (NT) domain of DNA polymerase beta and similar proteins; This ...
42-83
4.82e-03
Nucleotidyltransferase (NT) domain of DNA polymerase beta and similar proteins; This superfamily includes the NT domains of DNA polymerase beta and other family X DNA polymerases, as well as the NT domains of Class I and Class II CCA-adding enzymes, RelA- and SpoT-like ppGpp synthetases and hydrolases, 2'5'-oligoadenylate (2-5A)synthetases, Escherichia coli adenylyltransferase (GlnE), Escherichia coli uridylyl transferase (GlnD), poly (A) polymerases, terminal uridylyl transferases, and Staphylococcus aureus kanamycin nucleotidyltransferase, and similar proteins. The Escherichia coli CCA-adding enzyme belongs to this superfamily but is not included as this enzyme lacks the N-terminal helix conserved in the remainder of the superfamily. In the majority of the Pol beta-like superfamily NTs, two carboxylates, Dx[D/E], together with a third more distal carboxylate coordinate two divalent metal cations that are essential for catalysis. These divalent metal ions are involved in a two-metal ion mechanism of nucleotide addition. Two of the three catalytic carboxylates are found in Rel-Spo enzymes, with the second carboxylate of the DXD motif missing. Evidence supports a single-cation synthetase mechanism for Rel-Spo enzymes.
Pssm-ID: 143387 [Multi-domain] Cd Length: 49 Bit Score: 34.99 E-value: 4.82e-03
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.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
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specific hits meet or exceed a domain-specific e-value threshold
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and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
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the domain superfamily to which the specific and non-specific hits belong
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Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
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