bifunctional 3'-5' exonuclease/DNA polymerase family protein contains an N-terminal 3'-5' exonuclease domain belonging to the DnaQ-like (or DEDD) 3'-5' exonuclease superfamily and a C-terminal DNA polymerase family A, 5'-3' polymerase domain
DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in ...
618-1032
0e+00
DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in the repair of errors occurring during replication; DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in the repair of errors occurring during replication. Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). The three-dimensional structure of plastid DNA polymerase has substantial similarity to Pol I. The structure of Pol I resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
:
Pssm-ID: 176477 Cd Length: 371 Bit Score: 618.64 E-value: 0e+00
DEDDy 3'-5' exonuclease domain of Escherichia coli DNA polymerase I and similar bacterial ...
264-501
9.59e-48
DEDDy 3'-5' exonuclease domain of Escherichia coli DNA polymerase I and similar bacterial family-A DNA polymerases; Escherichia coli-like Polymerase I (Pol I), a subgroup of family-A DNA polymerases, contains a DEDDy-type DnaQ-like 3'-5' exonuclease domain in the same polypeptide chain as the polymerase domain. The exonuclease domain contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific YX(3)D pattern at ExoIII. These motifs are clustered around the active site and contain four conserved acidic residues that serve as ligands for the two metal ions required for catalysis. The 3'-5' exonuclease domain of DNA polymerases has a fundamental role in reducing polymerase errors and is involved in proofreading activity. E. coli DNA Pol I is involved in genome replication but is not the main replicating enzyme. It is also implicated in DNA repair.
:
Pssm-ID: 176651 [Multi-domain] Cd Length: 193 Bit Score: 168.47 E-value: 9.59e-48
DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in ...
618-1032
0e+00
DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in the repair of errors occurring during replication; DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in the repair of errors occurring during replication. Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). The three-dimensional structure of plastid DNA polymerase has substantial similarity to Pol I. The structure of Pol I resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
Pssm-ID: 176477 Cd Length: 371 Bit Score: 618.64 E-value: 0e+00
DNA polymerase I; All proteins in this family for which functions are known are DNA ...
325-1034
1.34e-82
DNA polymerase I; All proteins in this family for which functions are known are DNA polymerases Many also have an exonuclease motif. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]
Pssm-ID: 273160 [Multi-domain] Cd Length: 887 Bit Score: 287.32 E-value: 1.34e-82
DEDDy 3'-5' exonuclease domain of Escherichia coli DNA polymerase I and similar bacterial ...
264-501
9.59e-48
DEDDy 3'-5' exonuclease domain of Escherichia coli DNA polymerase I and similar bacterial family-A DNA polymerases; Escherichia coli-like Polymerase I (Pol I), a subgroup of family-A DNA polymerases, contains a DEDDy-type DnaQ-like 3'-5' exonuclease domain in the same polypeptide chain as the polymerase domain. The exonuclease domain contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific YX(3)D pattern at ExoIII. These motifs are clustered around the active site and contain four conserved acidic residues that serve as ligands for the two metal ions required for catalysis. The 3'-5' exonuclease domain of DNA polymerases has a fundamental role in reducing polymerase errors and is involved in proofreading activity. E. coli DNA Pol I is involved in genome replication but is not the main replicating enzyme. It is also implicated in DNA repair.
Pssm-ID: 176651 [Multi-domain] Cd Length: 193 Bit Score: 168.47 E-value: 9.59e-48
3'-5' exonuclease; This domain is responsible for the 3'-5' exonuclease proofreading activity ...
270-468
2.26e-13
3'-5' exonuclease; This domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyzes the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the Klenow fragment in E. coli polI it is also found in the Werner syndrome helicase (WRN), focus forming activity 1 protein (FFA-1) and ribonuclease D (RNase D). Werner syndrome is a human genetic disorder causing premature aging; the WRN protein has helicase activity in the 3'-5' direction. The FFA-1 protein is required for formation of a replication foci and also has helicase activity; it is a homolog of the WRN protein. RNase D is a 3'-5' exonuclease involved in tRNA processing. Also found in this family is the autoantigen PM/Scl thought to be involved in polymyositis-scleroderma overlap syndrome.
Pssm-ID: 396266 [Multi-domain] Cd Length: 173 Bit Score: 69.25 E-value: 2.26e-13
DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in ...
618-1032
0e+00
DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in the repair of errors occurring during replication; DNA polymerase A type from plastids of higher plants possibly involve in DNA replication or in the repair of errors occurring during replication. Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). The three-dimensional structure of plastid DNA polymerase has substantial similarity to Pol I. The structure of Pol I resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
Pssm-ID: 176477 Cd Length: 371 Bit Score: 618.64 E-value: 0e+00
Family A polymerase primarily fills DNA gaps that arise during DNA repair, recombination and ...
698-1031
2.20e-102
Family A polymerase primarily fills DNA gaps that arise during DNA repair, recombination and replication; DNA polymerase family A, 5'-3' polymerase domain. Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified into six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaeota polymerase II (class D), human polymerase beta (class X), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerases are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I, mitochondrial polymerase gamma, and several bacteriophage polymerases including those from odd-numbered phage (T3, T5, and T7). Prokaryotic polymerase I (pol I) has two functional domains located on the same polypeptide; a 5'-3' polymerase and a 5'-3' exonuclease. Pol I uses its 5' nuclease activity to remove the ribonucleotide portion of newly synthesized Okazaki fragments and the DNA polymerase activity to fill in the resulting gap. The structure of these polymerases resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
Pssm-ID: 176473 [Multi-domain] Cd Length: 347 Bit Score: 324.76 E-value: 2.20e-102
Polymerase I functions primarily to fill DNA gaps that arise during DNA repair, recombination ...
714-1031
2.10e-88
Polymerase I functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication; Family A polymerase (polymerase I) functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I (pol I) ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). Prokaryotic Pol Is have two functional domains located on the same polypeptide; a 5'-3' polymerase and 5'-3' exonuclease. Pol I uses its 5' nuclease activity to remove the ribonucleotide portion of newly synthesized Okazaki fragments and DNA polymerase activity to fill in the resulting gap. A combination of phylogenomic and signature sequence-based (or phonetic) approaches is used to understand the evolutionary relationships among bacteria. DNA polymerase I is one of the conserved proteins that is used to search for protein signatures. The structure of these polymerases resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
Pssm-ID: 176474 Cd Length: 377 Bit Score: 288.55 E-value: 2.10e-88
DNA polymerase I; All proteins in this family for which functions are known are DNA ...
325-1034
1.34e-82
DNA polymerase I; All proteins in this family for which functions are known are DNA polymerases Many also have an exonuclease motif. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, DNA replication, recombination, and repair]
Pssm-ID: 273160 [Multi-domain] Cd Length: 887 Bit Score: 287.32 E-value: 1.34e-82
DNA polymerase theta is a low-fidelity family A enzyme implicated in translesion synthesis and ...
698-1030
1.22e-58
DNA polymerase theta is a low-fidelity family A enzyme implicated in translesion synthesis and in somatic hypermutation; DNA polymerase theta is a low-fidelity family A enzyme implicated in translesion synthesis (TLS) and in somatic hypermutation (SHM). DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. Pol theta is an exception among family A polymerases and generates processive single base substitutions. Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I (pol I) ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). Prokaryotic Pol Is have two functional domains located on the same polypeptide; a 5'-3' polymerase and 5'-3' exonuclease. Pol I uses its 5' nuclease activity to remove the ribonucleotide portion of newly synthesized Okazaki fragments and DNA polymerase activity to fill in the resulting gap. Polymerase theta mostly has amino-terminal helicase domain, a carboxy-terminal polymerase domain and an intervening space region.
Pssm-ID: 176475 Cd Length: 373 Bit Score: 206.31 E-value: 1.22e-58
Phylum Aquificae Pol A is different from Escherichia coli Pol A by three signature sequences; ...
701-1030
4.79e-55
Phylum Aquificae Pol A is different from Escherichia coli Pol A by three signature sequences; Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). Prokaryotic Pol Is have two functional domains located on the same polypeptide; a 5'-3' polymerase and 5'-3' exonuclease. Pol I uses its 5' nuclease activity to remove the ribonucleotide portion of newly synthesized Okazaki fragments and DNA polymerase activity to fill in the resulting gap. A combination of phylogenomic and signature sequence-based (or phonetic) approaches is used to understand the evolutionary relationships among bacteria. DNA polymerase I is one of the conserved proteins that is used for phylogenetic anaylsis of bacteria. Species of the phylum Aquificae grow in extreme thermophilic environments. The Aquificae are non-spore-forming, Gram-negative rods and strictly thermophilic. Phylum Aquificae Pol A is different from E. coli Pol I by three signature sequences consisting of a 2 amino acids (aa) insert, a 5-6 aa insert and a 6 aa deletion. These signature sequences may provide a molecular marker for the family Aquificaceae and related species.
Pssm-ID: 176476 Cd Length: 324 Bit Score: 194.42 E-value: 4.79e-55
DEDDy 3'-5' exonuclease domain of Escherichia coli DNA polymerase I and similar bacterial ...
264-501
9.59e-48
DEDDy 3'-5' exonuclease domain of Escherichia coli DNA polymerase I and similar bacterial family-A DNA polymerases; Escherichia coli-like Polymerase I (Pol I), a subgroup of family-A DNA polymerases, contains a DEDDy-type DnaQ-like 3'-5' exonuclease domain in the same polypeptide chain as the polymerase domain. The exonuclease domain contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific YX(3)D pattern at ExoIII. These motifs are clustered around the active site and contain four conserved acidic residues that serve as ligands for the two metal ions required for catalysis. The 3'-5' exonuclease domain of DNA polymerases has a fundamental role in reducing polymerase errors and is involved in proofreading activity. E. coli DNA Pol I is involved in genome replication but is not the main replicating enzyme. It is also implicated in DNA repair.
Pssm-ID: 176651 [Multi-domain] Cd Length: 193 Bit Score: 168.47 E-value: 9.59e-48
Polymerase I functions primarily to fill DNA gaps that arise during DNA repair, recombination ...
726-1009
1.13e-15
Polymerase I functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication; Family A polymerase (polymerase I) functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). Prokaryotic Pol Is have two functional domains located on the same polypeptide; a 5'-3' polymerase and 5'-3' exonuclease. Pol I uses its 5' nuclease activity to remove the ribonucleotide portion of newly synthesized Okazaki fragments and DNA polymerase activity to fill in the resulting gap. A combination of phylogenomic and signature sequence-based (or phonetic) approaches is used to understand the evolutionary relationships among bacteria. DNA polymerase I is one of the conserved proteins that is used to search for protein signatures. The structure of these polymerases resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
Pssm-ID: 176479 [Multi-domain] Cd Length: 378 Bit Score: 79.98 E-value: 1.13e-15
3'-5' exonuclease; This domain is responsible for the 3'-5' exonuclease proofreading activity ...
270-468
2.26e-13
3'-5' exonuclease; This domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyzes the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the Klenow fragment in E. coli polI it is also found in the Werner syndrome helicase (WRN), focus forming activity 1 protein (FFA-1) and ribonuclease D (RNase D). Werner syndrome is a human genetic disorder causing premature aging; the WRN protein has helicase activity in the 3'-5' direction. The FFA-1 protein is required for formation of a replication foci and also has helicase activity; it is a homolog of the WRN protein. RNase D is a 3'-5' exonuclease involved in tRNA processing. Also found in this family is the autoantigen PM/Scl thought to be involved in polymyositis-scleroderma overlap syndrome.
Pssm-ID: 396266 [Multi-domain] Cd Length: 173 Bit Score: 69.25 E-value: 2.26e-13
Polymerase I functions primarily to fill DNA gaps that arise during DNA repair, recombination ...
729-1030
8.18e-13
Polymerase I functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication; Family A polymerase functions primarily to fill DNA gaps that arise during DNA repair, recombination and replication. DNA-dependent DNA polymerases can be classified in six main groups based upon phylogenetic relationships with E. coli polymerase I (classA), E. coli polymerase II (class B), E.coli polymerase III (class C), euryarchaaeota polymerase II (class D), human polymerase beta (class x), E. coli UmuC/DinB and eukaryotic RAP 30/Xeroderma pigmentosum variant (class Y). Family A polymerase are found primarily in organisms related to prokaryotes and include prokaryotic DNA polymerase I ,mitochondrial polymerase delta, and several bacteriphage polymerases including those from odd-numbered phage (T3, T5, and T7). Prokaryotic Pol Is have two functional domains located on the same polypeptide; a 5'-3' polymerase and 5'-3' exonuclease. Pol I uses its 5' nuclease activity to remove the ribonucleotide portion of newly synthesized Okazaki fragments and DNA polymerase activity to fill in the resulting gap. A combination of phylogenomic and signature sequence-based (or phonetic) approaches is used to understand the evolutionary relationships among bacteria. DNA polymerase I is one of the conserved proteins that is used to search for protein signatures. The structure of these polymerases resembles in overall morphology a cupped human right hand, with fingers (which bind an incoming nucleotide and interact with the single-stranded template), palm (which harbors the catalytic amino acid residues and also binds an incoming dNTP) and thumb (which binds double-stranded DNA) subdomains.
Pssm-ID: 176480 Cd Length: 429 Bit Score: 71.70 E-value: 8.18e-13
inactive DEDDy 3'-5' exonuclease domain of Bacillus stearothermophilus DNA polymerase I and ...
289-501
1.16e-11
inactive DEDDy 3'-5' exonuclease domain of Bacillus stearothermophilus DNA polymerase I and similar family-A DNA polymerases; Bacillus stearothermophilus-like Polymerase I (Pol I), a subgroup of the family-A DNA polymerases, contains an inactive DnaQ-like 3'-5' exonuclease domain in the same polypeptide chain as the polymerase region. The exonuclease-like domain of these proteins possess the same fold as the Klenow fragment (KF) of Escherichia coli Pol I, but does not contain the four critical metal-binding residues necessary for activity. The function of this domain is unknown. It might act as a spacer between the polymerase and the 5'-3' exonuclease domains. Some members of this subgroup, such as those from Bacillus sphaericus and Thermus aquaticus, are thermostable DNA polymerases.
Pssm-ID: 176652 [Multi-domain] Cd Length: 178 Bit Score: 64.59 E-value: 1.16e-11
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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