hypothetical protein TI05_02565 [Achromatium sp. WMS3]
List of domain hits
Name | Accession | Description | Interval | E-value | |||||
PRK05711 | PRK05711 | DNA polymerase III subunit epsilon; Provisional |
261-502 | 5.91e-130 | |||||
DNA polymerase III subunit epsilon; Provisional : Pssm-ID: 235574 [Multi-domain] Cd Length: 240 Bit Score: 377.28 E-value: 5.91e-130
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RNase_HI_prokaryote_like | cd09278 | RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two ... |
5-141 | 2.89e-83 | |||||
RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two evolutionarily unrelated families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD), residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Prokaryotic RNase H varies greatly in domain structures and substrate specificities. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability. : Pssm-ID: 260010 [Multi-domain] Cd Length: 139 Bit Score: 253.94 E-value: 2.89e-83
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Name | Accession | Description | Interval | E-value | |||||
PRK05711 | PRK05711 | DNA polymerase III subunit epsilon; Provisional |
261-502 | 5.91e-130 | |||||
DNA polymerase III subunit epsilon; Provisional Pssm-ID: 235574 [Multi-domain] Cd Length: 240 Bit Score: 377.28 E-value: 5.91e-130
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dnaQ_proteo | TIGR01406 | DNA polymerase III, epsilon subunit, Proteobacterial; This model represents DnaQ, the DNA ... |
265-494 | 8.00e-101 | |||||
DNA polymerase III, epsilon subunit, Proteobacterial; This model represents DnaQ, the DNA polymerase III epsilon subunit, as found in most Proteobacteria. It consists largely of an exonuclease domain as described in pfam00929. In Gram-positive bacteria, closely related regions are found both in the Gram-positive type DNA polymerase III alpha subunit and as an additional N-terminal domain of a DinG-family helicase. Both are excluded from this model, as are smaller proteins, also outside the Proteobacteria, that are similar in size to the epsilon subunit but as different in sequence as are the epsilon-like regions found in Gram-positive bacteria. [DNA metabolism, DNA replication, recombination, and repair] Pssm-ID: 130473 [Multi-domain] Cd Length: 225 Bit Score: 302.39 E-value: 8.00e-101
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DNA_pol_III_epsilon_Ecoli_like | cd06131 | DEDDh 3'-5' exonuclease domain of the epsilon subunit of Escherichia coli DNA polymerase III ... |
266-436 | 1.13e-98 | |||||
DEDDh 3'-5' exonuclease domain of the epsilon subunit of Escherichia coli DNA polymerase III and similar proteins; This subfamily is composed of the epsilon subunit of Escherichia coli DNA polymerase III (Pol III) and similar proteins. Pol III is the main DNA replicating enzyme in bacteria, functioning as the chromosomal replicase. It is a holoenzyme complex of ten different subunits, three of which (alpha, epsilon, and theta) compose the catalytic core. The Pol III epsilon subunit, encoded by the dnaQ gene, is a DEDDh-type 3'-5' exonuclease which is responsible for the proofreading activity of the polymerase, increasing the fidelity of DNA synthesis. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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 epsilon subunit of Pol III also functions as a stabilizer of the holoenzyme complex. Pssm-ID: 99835 [Multi-domain] Cd Length: 167 Bit Score: 294.44 E-value: 1.13e-98
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RNase_HI_prokaryote_like | cd09278 | RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two ... |
5-141 | 2.89e-83 | |||||
RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two evolutionarily unrelated families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD), residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Prokaryotic RNase H varies greatly in domain structures and substrate specificities. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability. Pssm-ID: 260010 [Multi-domain] Cd Length: 139 Bit Score: 253.94 E-value: 2.89e-83
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rnhA | PRK00203 | ribonuclease H; Reviewed |
5-142 | 9.53e-79 | |||||
ribonuclease H; Reviewed Pssm-ID: 178927 [Multi-domain] Cd Length: 150 Bit Score: 242.81 E-value: 9.53e-79
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DnaQ | COG0847 | DNA polymerase III, epsilon subunit or related 3'-5' exonuclease [Replication, recombination ... |
265-437 | 4.49e-69 | |||||
DNA polymerase III, epsilon subunit or related 3'-5' exonuclease [Replication, recombination and repair]; Pssm-ID: 440608 [Multi-domain] Cd Length: 163 Bit Score: 218.12 E-value: 4.49e-69
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RnhA | COG0328 | Ribonuclease HI [Replication, recombination and repair]; |
5-142 | 2.98e-68 | |||||
Ribonuclease HI [Replication, recombination and repair]; Pssm-ID: 440097 [Multi-domain] Cd Length: 136 Bit Score: 215.09 E-value: 2.98e-68
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RNase_H | pfam00075 | RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral ... |
5-142 | 1.04e-49 | |||||
RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral replication cycle, and often found as a domain associated with reverse transcriptases. Structure is a mixed alpha+beta fold with three a/b/a layers. Pssm-ID: 395028 [Multi-domain] Cd Length: 141 Bit Score: 167.17 E-value: 1.04e-49
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EXOIII | smart00479 | exonuclease domain in DNA-polymerase alpha and epsilon chain, ribonuclease T and other ... |
265-437 | 2.01e-46 | |||||
exonuclease domain in DNA-polymerase alpha and epsilon chain, ribonuclease T and other exonucleases; Pssm-ID: 214685 [Multi-domain] Cd Length: 169 Bit Score: 159.39 E-value: 2.01e-46
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RNase_T | pfam00929 | Exonuclease; This family includes a variety of exonuclease proteins, such as ribonuclease T ... |
267-432 | 2.35e-38 | |||||
Exonuclease; This family includes a variety of exonuclease proteins, such as ribonuclease T and the epsilon subunit of DNA polymerase III.; Pssm-ID: 395743 [Multi-domain] Cd Length: 164 Bit Score: 137.48 E-value: 2.35e-38
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Name | Accession | Description | Interval | E-value | |||||
PRK05711 | PRK05711 | DNA polymerase III subunit epsilon; Provisional |
261-502 | 5.91e-130 | |||||
DNA polymerase III subunit epsilon; Provisional Pssm-ID: 235574 [Multi-domain] Cd Length: 240 Bit Score: 377.28 E-value: 5.91e-130
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dnaQ_proteo | TIGR01406 | DNA polymerase III, epsilon subunit, Proteobacterial; This model represents DnaQ, the DNA ... |
265-494 | 8.00e-101 | |||||
DNA polymerase III, epsilon subunit, Proteobacterial; This model represents DnaQ, the DNA polymerase III epsilon subunit, as found in most Proteobacteria. It consists largely of an exonuclease domain as described in pfam00929. In Gram-positive bacteria, closely related regions are found both in the Gram-positive type DNA polymerase III alpha subunit and as an additional N-terminal domain of a DinG-family helicase. Both are excluded from this model, as are smaller proteins, also outside the Proteobacteria, that are similar in size to the epsilon subunit but as different in sequence as are the epsilon-like regions found in Gram-positive bacteria. [DNA metabolism, DNA replication, recombination, and repair] Pssm-ID: 130473 [Multi-domain] Cd Length: 225 Bit Score: 302.39 E-value: 8.00e-101
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DNA_pol_III_epsilon_Ecoli_like | cd06131 | DEDDh 3'-5' exonuclease domain of the epsilon subunit of Escherichia coli DNA polymerase III ... |
266-436 | 1.13e-98 | |||||
DEDDh 3'-5' exonuclease domain of the epsilon subunit of Escherichia coli DNA polymerase III and similar proteins; This subfamily is composed of the epsilon subunit of Escherichia coli DNA polymerase III (Pol III) and similar proteins. Pol III is the main DNA replicating enzyme in bacteria, functioning as the chromosomal replicase. It is a holoenzyme complex of ten different subunits, three of which (alpha, epsilon, and theta) compose the catalytic core. The Pol III epsilon subunit, encoded by the dnaQ gene, is a DEDDh-type 3'-5' exonuclease which is responsible for the proofreading activity of the polymerase, increasing the fidelity of DNA synthesis. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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 epsilon subunit of Pol III also functions as a stabilizer of the holoenzyme complex. Pssm-ID: 99835 [Multi-domain] Cd Length: 167 Bit Score: 294.44 E-value: 1.13e-98
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RNase_HI_prokaryote_like | cd09278 | RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two ... |
5-141 | 2.89e-83 | |||||
RNase HI family found mainly in prokaryotes; Ribonuclease H (RNase H) is classified into two evolutionarily unrelated families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD), residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Prokaryotic RNase H varies greatly in domain structures and substrate specificities. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability. Pssm-ID: 260010 [Multi-domain] Cd Length: 139 Bit Score: 253.94 E-value: 2.89e-83
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rnhA | PRK00203 | ribonuclease H; Reviewed |
5-142 | 9.53e-79 | |||||
ribonuclease H; Reviewed Pssm-ID: 178927 [Multi-domain] Cd Length: 150 Bit Score: 242.81 E-value: 9.53e-79
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dnaq | TIGR00573 | exonuclease, DNA polymerase III, epsilon subunit family; All proteins in this family for which ... |
265-483 | 4.11e-69 | |||||
exonuclease, DNA polymerase III, epsilon subunit family; All proteins in this family for which functions are known are components of the DNA polymerase III complex (epsilon subunit). There is, however, an outgroup that includes paralogs in some gamma-proteobacteria and the n-terminal region of DinG from some low GC gram positive bacteria. This family is based on the phylogenomic analysis of JA Eisen (1999, Ph.D. Thesis, Stanford University). [DNA metabolism, Degradation of DNA] Pssm-ID: 129663 [Multi-domain] Cd Length: 217 Bit Score: 220.40 E-value: 4.11e-69
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DnaQ | COG0847 | DNA polymerase III, epsilon subunit or related 3'-5' exonuclease [Replication, recombination ... |
265-437 | 4.49e-69 | |||||
DNA polymerase III, epsilon subunit or related 3'-5' exonuclease [Replication, recombination and repair]; Pssm-ID: 440608 [Multi-domain] Cd Length: 163 Bit Score: 218.12 E-value: 4.49e-69
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RnhA | COG0328 | Ribonuclease HI [Replication, recombination and repair]; |
5-142 | 2.98e-68 | |||||
Ribonuclease HI [Replication, recombination and repair]; Pssm-ID: 440097 [Multi-domain] Cd Length: 136 Bit Score: 215.09 E-value: 2.98e-68
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RNase_H | pfam00075 | RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral ... |
5-142 | 1.04e-49 | |||||
RNase H; RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral replication cycle, and often found as a domain associated with reverse transcriptases. Structure is a mixed alpha+beta fold with three a/b/a layers. Pssm-ID: 395028 [Multi-domain] Cd Length: 141 Bit Score: 167.17 E-value: 1.04e-49
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PolC | COG2176 | DNA polymerase III, alpha subunit (gram-positive type) [Replication, recombination and repair]; ... |
267-435 | 1.36e-46 | |||||
DNA polymerase III, alpha subunit (gram-positive type) [Replication, recombination and repair]; Pssm-ID: 441779 [Multi-domain] Cd Length: 181 Bit Score: 160.31 E-value: 1.36e-46
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EXOIII | smart00479 | exonuclease domain in DNA-polymerase alpha and epsilon chain, ribonuclease T and other ... |
265-437 | 2.01e-46 | |||||
exonuclease domain in DNA-polymerase alpha and epsilon chain, ribonuclease T and other exonucleases; Pssm-ID: 214685 [Multi-domain] Cd Length: 169 Bit Score: 159.39 E-value: 2.01e-46
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RNase_HI_eukaryote_like | cd09280 | Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic ... |
7-141 | 5.25e-46 | |||||
Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic counterparts; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. Eukaryotic RNase H is longer and more complex than in prokaryotes. Almost all eukaryotic RNase HI have highly conserved regions at their N-termini called hybrid binding domain (HBD). It is speculated that the HBD contributes to binding the RNA/DNA hybrid. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability, but RNase H is essential in higher eukaryotes. RNase H knockout mice lack mitochondrial DNA replication and die as embryos. Pssm-ID: 260012 [Multi-domain] Cd Length: 145 Bit Score: 157.34 E-value: 5.25e-46
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DEDDh | cd06127 | DEDDh 3'-5' exonuclease domain family; DEDDh exonucleases, part of the DnaQ-like (or DEDD) ... |
267-433 | 2.68e-45 | |||||
DEDDh 3'-5' exonuclease domain family; DEDDh exonucleases, part of the DnaQ-like (or DEDD) exonuclease superfamily, catalyze the excision of nucleoside monophosphates at the DNA or RNA termini in the 3'-5' direction. These proteins contain four invariant acidic residues in three conserved sequence motifs termed ExoI, ExoII and ExoIII. DEDDh exonucleases are classified as such because of the presence of specific Hx(4)D conserved pattern at the ExoIII motif. The four conserved acidic residues are clustered around the active site and serve as ligands for the two metal ions required for catalysis. Most DEDDh exonucleases are the proofreading subunits (epsilon) or domains of bacterial DNA polymerase III, the main replicating enzyme in bacteria, which functions as the chromosomal replicase. Other members include other DNA and RNA exonucleases such as RNase T, Oligoribonuclease, and RNA exonuclease (REX), among others. Pssm-ID: 176648 [Multi-domain] Cd Length: 159 Bit Score: 155.92 E-value: 2.68e-45
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RNase_T | pfam00929 | Exonuclease; This family includes a variety of exonuclease proteins, such as ribonuclease T ... |
267-432 | 2.35e-38 | |||||
Exonuclease; This family includes a variety of exonuclease proteins, such as ribonuclease T and the epsilon subunit of DNA polymerase III.; Pssm-ID: 395743 [Multi-domain] Cd Length: 164 Bit Score: 137.48 E-value: 2.35e-38
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RNase_H_Dikarya_like | cd13934 | Fungal (dikarya) Ribonuclease H, uncharacterized; This family contains dikarya RNase H, many ... |
7-142 | 2.49e-30 | |||||
Fungal (dikarya) Ribonuclease H, uncharacterized; This family contains dikarya RNase H, many of which are uncharacterized. Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. It is widely present in various organisms, including bacteria, archaea and eukaryotes. Most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site residues and have the same catalytic mechanism and functions in cells. RNase H is involved in DNA replication, repair and transcription. An important RNase H function is to remove Okazaki fragments during DNA replication. Pssm-ID: 260014 [Multi-domain] Cd Length: 153 Bit Score: 115.37 E-value: 2.49e-30
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PRK06063 | PRK06063 | DEDDh family exonuclease; |
268-449 | 7.33e-25 | |||||
DEDDh family exonuclease; Pssm-ID: 180377 [Multi-domain] Cd Length: 313 Bit Score: 104.78 E-value: 7.33e-25
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polC | PRK00448 | DNA polymerase III PolC; Validated |
254-435 | 3.35e-24 | |||||
DNA polymerase III PolC; Validated Pssm-ID: 234767 [Multi-domain] Cd Length: 1437 Bit Score: 106.85 E-value: 3.35e-24
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PRK08074 | PRK08074 | bifunctional ATP-dependent DNA helicase/DNA polymerase III subunit epsilon; Validated |
262-435 | 9.26e-23 | |||||
bifunctional ATP-dependent DNA helicase/DNA polymerase III subunit epsilon; Validated Pssm-ID: 236148 [Multi-domain] Cd Length: 928 Bit Score: 102.34 E-value: 9.26e-23
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PRK07883 | PRK07883 | DEDD exonuclease domain-containing protein; |
268-431 | 2.08e-22 | |||||
DEDD exonuclease domain-containing protein; Pssm-ID: 236123 [Multi-domain] Cd Length: 557 Bit Score: 100.38 E-value: 2.08e-22
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PRK06548 | PRK06548 | ribonuclease H; Provisional |
9-141 | 7.32e-21 | |||||
ribonuclease H; Provisional Pssm-ID: 75628 [Multi-domain] Cd Length: 161 Bit Score: 89.49 E-value: 7.32e-21
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PRK08719 | PRK08719 | ribonuclease H; Reviewed |
1-140 | 7.83e-21 | |||||
ribonuclease H; Reviewed Pssm-ID: 236334 [Multi-domain] Cd Length: 147 Bit Score: 88.76 E-value: 7.83e-21
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RNase_H_like | cd06222 | Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of ... |
8-139 | 1.56e-20 | |||||
Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of spliceosomal protein Prp8; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. It is widely present in various organisms, including bacteria, archaea, and eukaryotes. Most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site residues and have the same catalytic mechanism and functions in cells. RNase H is involved in DNA replication, repair and transcription. An important RNase H function is to remove Okazaki fragments during DNA replication. RNase H inhibitors have been explored as anti-HIV drug targets since RNase H inactivation inhibits reverse transcription. This model also includes the Prp8 domain IV, which adopts the RNase fold but shows low sequence homology; domain IV is implicated in key spliceosomal interactions. Pssm-ID: 259998 [Multi-domain] Cd Length: 121 Bit Score: 86.98 E-value: 1.56e-20
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DNA_pol_III_epsilon_like | cd06130 | an uncharacterized bacterial subgroup of the DEDDh 3'-5' exonuclease domain family with ... |
267-434 | 5.78e-18 | |||||
an uncharacterized bacterial subgroup of the DEDDh 3'-5' exonuclease domain family with similarity to the epsilon subunit of DNA polymerase III; This subfamily is composed of uncharacterized bacterial proteins with similarity to the epsilon subunit of DNA polymerase III (Pol III), a multisubunit polymerase which is the main DNA replicating enzyme in bacteria, functioning as the chromosomal replicase. The Pol III holoenzyme is a complex of ten different subunits, three of which (alpha, epsilon, and theta) compose the catalytic core. The Pol III epsilon subunit, encoded by the dnaQ gene, is a DEDDh-type 3'-5' exonuclease which is responsible for the proofreading activity of the polymerase, increasing the fidelity of DNA synthesis. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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 epsilon subunit of Pol III also functions as a stabilizer of the holoenzyme complex. Pssm-ID: 99834 [Multi-domain] Cd Length: 156 Bit Score: 81.02 E-value: 5.78e-18
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PRK06310 | PRK06310 | DNA polymerase III subunit epsilon; Validated |
262-443 | 6.21e-18 | |||||
DNA polymerase III subunit epsilon; Validated Pssm-ID: 180525 [Multi-domain] Cd Length: 250 Bit Score: 83.34 E-value: 6.21e-18
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RNase_HI_like | cd09279 | RNAse HI family that includes archaeal, some bacterial as well as plant RNase HI; Ribonuclease ... |
5-141 | 1.31e-17 | |||||
RNAse HI family that includes archaeal, some bacterial as well as plant RNase HI; Ribonuclease H (RNase H) is classified into two evolutionarily unrelated families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Most archaeal genomes contain only type 2 RNase H (RNase HII); however, a few contain RNase HI as well. Although archaeal RNase HI sequences conserve the DEDD active-site motif, they lack other common features important for catalytic function, such as the basic protrusion region. Archaeal RNase HI homologs are more closely related to retroviral RNase HI than bacterial and eukaryotic type I RNase H in enzymatic properties. Pssm-ID: 260011 [Multi-domain] Cd Length: 128 Bit Score: 79.05 E-value: 1.31e-17
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PRK07740 | PRK07740 | hypothetical protein; Provisional |
262-432 | 2.30e-17 | |||||
hypothetical protein; Provisional Pssm-ID: 236085 [Multi-domain] Cd Length: 244 Bit Score: 81.64 E-value: 2.30e-17
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PRK06807 | PRK06807 | 3'-5' exonuclease; |
267-433 | 1.55e-16 | |||||
3'-5' exonuclease; Pssm-ID: 235864 [Multi-domain] Cd Length: 313 Bit Score: 80.24 E-value: 1.55e-16
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PRK09145 | PRK09145 | 3'-5' exonuclease; |
267-440 | 4.14e-16 | |||||
3'-5' exonuclease; Pssm-ID: 236391 [Multi-domain] Cd Length: 202 Bit Score: 76.86 E-value: 4.14e-16
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PRK09182 | PRK09182 | DNA polymerase III subunit epsilon; Validated |
261-370 | 1.17e-14 | |||||
DNA polymerase III subunit epsilon; Validated Pssm-ID: 236397 [Multi-domain] Cd Length: 294 Bit Score: 74.63 E-value: 1.17e-14
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PRK07942 | PRK07942 | DNA polymerase III subunit epsilon; Provisional |
267-434 | 4.77e-14 | |||||
DNA polymerase III subunit epsilon; Provisional Pssm-ID: 181176 [Multi-domain] Cd Length: 232 Bit Score: 71.55 E-value: 4.77e-14
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PRK07983 | PRK07983 | exodeoxyribonuclease X; Provisional |
268-428 | 7.40e-14 | |||||
exodeoxyribonuclease X; Provisional Pssm-ID: 181186 [Multi-domain] Cd Length: 219 Bit Score: 70.90 E-value: 7.40e-14
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PRK06309 | PRK06309 | DNA polymerase III subunit epsilon; Validated |
265-437 | 8.09e-14 | |||||
DNA polymerase III subunit epsilon; Validated Pssm-ID: 180524 [Multi-domain] Cd Length: 232 Bit Score: 70.99 E-value: 8.09e-14
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Rnase_HI_RT_non_LTR | cd09276 | non-LTR RNase HI domain of reverse transcriptases; Ribonuclease H (RNase H) is classified into ... |
8-142 | 2.24e-12 | |||||
non-LTR RNase HI domain of reverse transcriptases; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). Ribonuclease HI (RNase HI) is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes. RNase HI has also been observed as an adjunct domain to the reverse transcriptase gene in retroviruses, long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. The position of the RNase domain of non-LTR and LTR transposons is at the carboxyl terminal of the reverse transcriptase (RT) domain and their RNase domains group together, indicating a common evolutionary origin. Many non-LTR transposons have lost the RNase domain because their activity is at the nucleus and cellular RNase may suffice; however LTR retrotransposons always encode their own RNase domain because it requires RNase activity in RNA-protein particles in the cytoplasm. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription. Pssm-ID: 260008 [Multi-domain] Cd Length: 131 Bit Score: 64.16 E-value: 2.24e-12
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PRK08517 | PRK08517 | 3'-5' exonuclease; |
255-428 | 7.39e-12 | |||||
3'-5' exonuclease; Pssm-ID: 236281 [Multi-domain] Cd Length: 257 Bit Score: 65.43 E-value: 7.39e-12
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PRK09146 | PRK09146 | DNA polymerase III subunit epsilon; Validated |
269-362 | 2.34e-10 | |||||
DNA polymerase III subunit epsilon; Validated Pssm-ID: 236392 [Multi-domain] Cd Length: 239 Bit Score: 60.71 E-value: 2.34e-10
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PRK05601 | PRK05601 | DNA polymerase III subunit epsilon; Validated |
241-369 | 2.76e-09 | |||||
DNA polymerase III subunit epsilon; Validated Pssm-ID: 235529 [Multi-domain] Cd Length: 377 Bit Score: 59.07 E-value: 2.76e-09
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RNase_HI_bacteria_like | cd09277 | Bacterial RNase HI containing a hybrid binding domain (HBD) at the N-terminus; Ribonuclease H ... |
5-142 | 2.87e-08 | |||||
Bacterial RNase HI containing a hybrid binding domain (HBD) at the N-terminus; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is involved in DNA replication, repair and transcription. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, Type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. Prokaryotic RNase H varies greatly in domain structures and substrate specificities. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability. Some bacteria distinguished from other bacterial RNase HI in the presence of a hybrid binding domain (HBD) at the N-terminus which is commonly present at the N-termini of eukaryotic RNase HI. It has been reported that this domain is required for dimerization and processivity of RNase HI upon binding to RNA-DNA hybrids. Pssm-ID: 260009 [Multi-domain] Cd Length: 133 Bit Score: 52.49 E-value: 2.87e-08
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TREX1_2 | cd06136 | DEDDh 3'-5' exonuclease domain of three prime repair exonuclease (TREX)1, TREX2, and similar ... |
267-370 | 3.03e-08 | |||||
DEDDh 3'-5' exonuclease domain of three prime repair exonuclease (TREX)1, TREX2, and similar proteins; Three prime repair exonuclease (TREX)1 and TREX2 are closely related DEDDh-type DnaQ-like 3'-5' exonucleases. They contain three conserved sequence motifs known as ExoI, II, and III, with a specific Hx(4)D conserved pattern at ExoIII. These motifs contain four conserved acidic residues that participate in coordination of divalent metal ions required for catalysis. Both proteins play a role in the metabolism and clearance of DNA. TREX1 is the major 3'-5' exonuclease activity detected in mammalian cells. Mutations in the human TREX1 gene can cause Aicardi-Goutieres syndrome (AGS), which is characterized by perturbed innate immunity and presents itself as a severe neurological disease. TREX1 degrades ssDNA generated by aberrant replication intermediates to prevent checkpoint activation and autoimmune disease. There are distinct structural differences between TREX1 and TREX2 that point to different biological roles for these proteins. The main difference is the presence of about 70 amino acids at the C-terminus of TREX1. In addition, TREX1 has a nonrepetitive proline-rich region that is not present in the TREX2 protein. Furthermore, TREX2 contains a conserved DNA binding loop positioned adjacent to the active site that has a sequence distinct from the corresponding loop in TREX1. Truncations in the C-terminus of human TREX1 cause autosomal dominant retinal vasculopathy with cerebral leukodystrophy (RVCL), a neurovascular syndrome featuring a progressive loss of visual acuity combined with a variable neurological picture. Pssm-ID: 99839 [Multi-domain] Cd Length: 177 Bit Score: 53.49 E-value: 3.03e-08
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rnhA | PRK13907 | ribonuclease H; Provisional |
5-142 | 6.45e-08 | |||||
ribonuclease H; Provisional Pssm-ID: 139967 [Multi-domain] Cd Length: 128 Bit Score: 51.21 E-value: 6.45e-08
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RNaseT | cd06134 | DEDDh 3'-5' exonuclease domain of RNase T; RNase T is a DEDDh-type DnaQ-like 3'-5' ... |
267-429 | 8.92e-07 | |||||
DEDDh 3'-5' exonuclease domain of RNase T; RNase T is a DEDDh-type DnaQ-like 3'-5' exoribonuclease E implicated in the 3' maturation of small stable RNAs and 23srRNA, and in the end turnover of tRNA. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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. RNase T is related to the proofreading domain of DNA polymerase III. Despite its important role, RNase T is mainly found only in gammaproteobacteria. It is speculated that it might have originated from DNA polymerase III at the time the gamma division of proteobacteria diverged from other bacteria. RNase T is a homodimer with the catalytic residues of one monomer contacting a large basic patch on the other monomer to form a functional active site. Pssm-ID: 99837 [Multi-domain] Cd Length: 189 Bit Score: 49.21 E-value: 8.92e-07
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YprB | COG3359 | Uncharacterized conserved protein YprB, contains RNaseH-like and TPR domains [General function ... |
267-373 | 5.78e-05 | |||||
Uncharacterized conserved protein YprB, contains RNaseH-like and TPR domains [General function prediction only]; Pssm-ID: 442587 [Multi-domain] Cd Length: 198 Bit Score: 44.17 E-value: 5.78e-05
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PRK06195 | PRK06195 | DNA polymerase III subunit epsilon; Validated |
318-434 | 8.62e-05 | |||||
DNA polymerase III subunit epsilon; Validated Pssm-ID: 235735 [Multi-domain] Cd Length: 309 Bit Score: 44.39 E-value: 8.62e-05
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ERI-1_3'hExo_like | cd06133 | DEDDh 3'-5' exonuclease domain of Caenorhabditis elegans ERI-1, human 3' exonuclease, and ... |
267-344 | 2.08e-04 | |||||
DEDDh 3'-5' exonuclease domain of Caenorhabditis elegans ERI-1, human 3' exonuclease, and similar proteins; This subfamily is composed of Caenorhabditis elegans ERI-1, human 3' exonuclease (3'hExo), Drosophila exonuclease snipper (snp), and similar proteins from eukaryotes and bacteria. These are DEDDh-type DnaQ-like 3'-5' exonucleases containing three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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. ERI-1 has been implicated in the degradation of small interfering RNAs (RNAi). 3'hExo participates in the degradation of histone mRNAs. Snp is a non-essential exonuclease that efficiently degrades structured RNA and DNA substrates as long as there is a minimum of 2 nucleotides in the 3' overhang to initiate degradation. Snp is not a functional homolog of either ERI-1 or 3'hExo. Pssm-ID: 99836 [Multi-domain] Cd Length: 176 Bit Score: 42.21 E-value: 2.08e-04
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Orn | cd06135 | DEDDh 3'-5' exonuclease domain of oligoribonuclease and similar proteins; Oligoribonuclease ... |
269-289 | 4.30e-04 | |||||
DEDDh 3'-5' exonuclease domain of oligoribonuclease and similar proteins; Oligoribonuclease (Orn) is a DEDDh-type DnaQ-like 3'-5' exoribonuclease that is responsible for degrading small oligoribonucleotides to mononucleotides. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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. Orn is essential for Escherichia coli survival. The human homolog, also called Sfn (small fragment nuclease), is able to hydrolyze short single-stranded RNA and DNA oligomers. It plays a role in cellular nucleotide recycling. Pssm-ID: 99838 [Multi-domain] Cd Length: 173 Bit Score: 40.99 E-value: 4.30e-04
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UvrD_C | pfam13361 | UvrD-like helicase C-terminal domain; This domain is found at the C-terminus of a wide variety ... |
265-330 | 8.27e-04 | |||||
UvrD-like helicase C-terminal domain; This domain is found at the C-terminus of a wide variety of helicase enzymes. This domain has a AAA-like structural fold. Pssm-ID: 433145 [Multi-domain] Cd Length: 377 Bit Score: 41.62 E-value: 8.27e-04
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PRK05359 | PRK05359 | oligoribonuclease; Provisional |
267-289 | 8.86e-04 | |||||
oligoribonuclease; Provisional Pssm-ID: 235429 Cd Length: 181 Bit Score: 40.14 E-value: 8.86e-04
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KapD | COG5018 | 3'-5' exonuclease KapD, inhibitor of KinA-controlled sporulation [Signal transduction ... |
265-350 | 1.80e-03 | |||||
3'-5' exonuclease KapD, inhibitor of KinA-controlled sporulation [Signal transduction mechanisms]; Pssm-ID: 444042 [Multi-domain] Cd Length: 181 Bit Score: 39.46 E-value: 1.80e-03
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Orn | COG1949 | Oligoribonuclease (3'-5' exoribonuclease) [RNA processing and modification]; |
269-289 | 2.31e-03 | |||||
Oligoribonuclease (3'-5' exoribonuclease) [RNA processing and modification]; Pssm-ID: 441552 Cd Length: 177 Bit Score: 38.94 E-value: 2.31e-03
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RNase_HI_RT_Bel | cd09273 | Bel/Pao family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes ... |
8-140 | 2.90e-03 | |||||
Bel/Pao family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote. RNase HI has also been observed as adjunct domains to the reverse transcriptase gene in retroviruses, in long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. Phylogenetic patterns of RNase HI of LTR retroelements is classified into five major families, Ty3/Gypsy, Ty1/Copia, Bel/Pao, DIRS1 and the vertebrate retroviruses. Bel/Pao family has been described only in metazoan genomes. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription. Pssm-ID: 260005 [Multi-domain] Cd Length: 131 Bit Score: 38.09 E-value: 2.90e-03
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PRK07246 | PRK07246 | bifunctional ATP-dependent DNA helicase/DNA polymerase III subunit epsilon; Validated |
259-433 | 3.98e-03 | |||||
bifunctional ATP-dependent DNA helicase/DNA polymerase III subunit epsilon; Validated Pssm-ID: 180905 [Multi-domain] Cd Length: 820 Bit Score: 40.06 E-value: 3.98e-03
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DNA_pol_A_exo1 | pfam01612 | 3'-5' exonuclease; This domain is responsible for the 3'-5' exonuclease proofreading activity ... |
267-416 | 5.67e-03 | |||||
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: 37.67 E-value: 5.67e-03
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ExoI_N | cd06138 | N-terminal DEDDh 3'-5' exonuclease domain of Escherichia coli exonuclease I and similar ... |
270-321 | 7.69e-03 | |||||
N-terminal DEDDh 3'-5' exonuclease domain of Escherichia coli exonuclease I and similar proteins; This subfamily is composed of the N-terminal domain of Escherichia coli exonuclease I (ExoI) and similar proteins. ExoI is a monomeric enzyme that hydrolyzes single stranded DNA in the 3' to 5' direction. It plays a role in DNA recombination and repair. It primarily functions in repairing frameshift mutations. The N-terminal domain of ExoI is a DEDDh-type DnaQ-like 3'-5 exonuclease containing three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved 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 ExoI structure is unique among DnaQ family enzymes in that there is a large distance between the two metal ions required for catalysis and the catalytic histidine is oriented away from the active site. Pssm-ID: 99841 [Multi-domain] Cd Length: 183 Bit Score: 37.63 E-value: 7.69e-03
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Blast search parameters | ||||
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