LigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas ...
30-265
5.72e-63
LigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas aeruginosa (Pae) LigD. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. PaeLigD is monomeric, containing an N-terminal phosphoesterase module, a central polymerase (Pol) domain, and a C-terminal ATP-dependent ligase domain. Mycobacterium tuberculosis (Mt)LigD, also found in this group, is monomeric and contains the same modules but these are arranged differently: an N-terminal Pol domain, a central phosphoesterase module, and a C-terminal ligase domain. It has been suggested that LigD Pol contributes to NHEJ-mediated DNA DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The PaeLigD Pol domain in vitro, in a manganese-dependent fashion, catalyzes templated extensions of 5'-overhang duplex DNA, and nontemplated single-nucleotide additions to blunt-end duplex DNA; it preferentially adds single ribonucleotides at blunt DNA ends. PaeLigD Pol adds a correctly paired rNTP to the DNA primer termini more rapidly than it does a correctly paired dNTP; it has higher infidelity as an RNA polymerase than it does as a DNA polymerase, which is in keeping with the mutagenic property of NHEJ-mediated DNA DSB repair. The MtLigD Pol domain similarly is stimulated by manganese, is error-prone, and prefers adding rNTPs to dNTPs in vitro. The MtLigD Pol domain has been shown to prefer DNA gapped substrates containing a 5'-phosphate group at the gap.
Pssm-ID: 240131 [Multi-domain] Cd Length: 227 Bit Score: 199.66 E-value: 5.72e-63
DNA ligase D; Members of this protein family are DNA ligases involved in the repair of DNA ...
1-288
1.39e-61
DNA ligase D; Members of this protein family are DNA ligases involved in the repair of DNA double-stranded breaks by non-homologous end joining (NHEJ). The system of the bacterial Ku protein (TIGR02772) plus this DNA ligase is seen in about 20 % of bacterial genomes to date and at least one archaeon (Archeoglobus fulgidus). This model describes a central and a C-terminal domain. These two domains may be permuted, as in genus Mycobacterium, or divided into tandem ORFs, and therefore not be identified by this model. An additional N-terminal 3'-phosphoesterase (PE) domain present in some but not all examples of this ligase is not included in the seed alignment for this model; it only represents the central ATP-dependent ligase domain and the C-terminal polymerase domain. Most examples of genes for this ligase are adjacent to the gene for Ku. [DNA metabolism, DNA replication, recombination, and repair]
Pssm-ID: 274293 [Multi-domain] Cd Length: 552 Bit Score: 205.25 E-value: 1.39e-61
LigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas ...
30-265
5.72e-63
LigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas aeruginosa (Pae) LigD. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. PaeLigD is monomeric, containing an N-terminal phosphoesterase module, a central polymerase (Pol) domain, and a C-terminal ATP-dependent ligase domain. Mycobacterium tuberculosis (Mt)LigD, also found in this group, is monomeric and contains the same modules but these are arranged differently: an N-terminal Pol domain, a central phosphoesterase module, and a C-terminal ligase domain. It has been suggested that LigD Pol contributes to NHEJ-mediated DNA DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The PaeLigD Pol domain in vitro, in a manganese-dependent fashion, catalyzes templated extensions of 5'-overhang duplex DNA, and nontemplated single-nucleotide additions to blunt-end duplex DNA; it preferentially adds single ribonucleotides at blunt DNA ends. PaeLigD Pol adds a correctly paired rNTP to the DNA primer termini more rapidly than it does a correctly paired dNTP; it has higher infidelity as an RNA polymerase than it does as a DNA polymerase, which is in keeping with the mutagenic property of NHEJ-mediated DNA DSB repair. The MtLigD Pol domain similarly is stimulated by manganese, is error-prone, and prefers adding rNTPs to dNTPs in vitro. The MtLigD Pol domain has been shown to prefer DNA gapped substrates containing a 5'-phosphate group at the gap.
Pssm-ID: 240131 [Multi-domain] Cd Length: 227 Bit Score: 199.66 E-value: 5.72e-63
DNA ligase D; Members of this protein family are DNA ligases involved in the repair of DNA ...
1-288
1.39e-61
DNA ligase D; Members of this protein family are DNA ligases involved in the repair of DNA double-stranded breaks by non-homologous end joining (NHEJ). The system of the bacterial Ku protein (TIGR02772) plus this DNA ligase is seen in about 20 % of bacterial genomes to date and at least one archaeon (Archeoglobus fulgidus). This model describes a central and a C-terminal domain. These two domains may be permuted, as in genus Mycobacterium, or divided into tandem ORFs, and therefore not be identified by this model. An additional N-terminal 3'-phosphoesterase (PE) domain present in some but not all examples of this ligase is not included in the seed alignment for this model; it only represents the central ATP-dependent ligase domain and the C-terminal polymerase domain. Most examples of genes for this ligase are adjacent to the gene for Ku. [DNA metabolism, DNA replication, recombination, and repair]
Pssm-ID: 274293 [Multi-domain] Cd Length: 552 Bit Score: 205.25 E-value: 1.39e-61
LigD_Pol_like_2: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas ...
30-265
8.14e-58
LigD_Pol_like_2: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas aeruginosa (Pae) LigD, subgroup 2. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. It has been suggested that LigD Pol contributes to NHEJ-mediated DNA DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The Pol domains of PaeLigD and Mycobacterium tuberculosis (Mt)LigD are stimulated by manganese, are error-prone, and prefer adding rNTPs to dNTPs in vitro; however PaeLigD and MtLigD belong to other subgroups, proteins in this subgroup await functional characterization.
Pssm-ID: 240135 [Multi-domain] Cd Length: 228 Bit Score: 186.28 E-value: 8.14e-58
DNA ligase D, polymerase domain; DNA repair of double-stranded breaks by non-homologous end ...
13-266
8.37e-58
DNA ligase D, polymerase domain; DNA repair of double-stranded breaks by non-homologous end joining (NHEJ) is accomplished by a two-protein system that is present in a minority of prokaryotes. One component is the Ku protein (see TIGR02772), which binds DNA ends. The other is a DNA ligase, a protein that is a multidomain polypeptide in most of those bacteria that have NHEJ, a permuted polypeptide in Mycobacterium tuberculosis and a few other species, and the product of tandem genes in some other bacteria. This model represents the polymerase domain.
Pssm-ID: 274294 [Multi-domain] Cd Length: 245 Bit Score: 186.73 E-value: 8.37e-58
LigD_Pol_like_1: Polymerase (Pol) domain of mostly bacterial LigD proteins similar to ...
30-265
2.22e-44
LigD_Pol_like_1: Polymerase (Pol) domain of mostly bacterial LigD proteins similar to Pseudomonas aeruginosa (Pae) LigD, subgroup 1. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. It has been suggested that LigD Pol contributes to NHEJ-mediated DNA DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The Pol domains of PaeLigD and Mycobacterium tuberculosis (Mt)LigD are stimulated by manganese, are error-prone, and prefer adding rNTPs to dNTPs in vitro; however PaeLigD and MtLigD belong to other subgroups, proteins in this subgroup await functional characterization.
Pssm-ID: 240134 [Multi-domain] Cd Length: 228 Bit Score: 151.87 E-value: 2.22e-44
PaeLigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas ...
30-265
1.22e-38
PaeLigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas aeruginosa (Pae) LigD. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. PaeLigD is monomeric, containing an N-terminal phosphoesterase module, a central polymerase (Pol) domain, and a C-terminal ATP-dependent ligase domain. It has been suggested that LigD Pol contributes to NHEJ-mediated DNA DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The PaeLigD Pol domain in vitro, in a manganese-dependent fashion, catalyzes templated extensions of 5'-overhang duplex DNA, and nontemplated single-nucleotide additions to blunt-end duplex DNA; it preferentially adds single ribonucleotides at blunt DNA ends. PaeLigD Pol adds a correctly paired rNTP to the DNA primer termini more rapidly than it does a correctly paired dNTP; it has higher infidelity as an RNA polymerase than it does as a DNA polymerase, which is in keeping with the mutagenic property of NHEJ-mediated DNA DSB repair.
Pssm-ID: 240132 [Multi-domain] Cd Length: 227 Bit Score: 136.58 E-value: 1.22e-38
LigD_Pol_like_3: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas ...
30-265
8.27e-38
LigD_Pol_like_3: Polymerase (Pol) domain of bacterial LigD proteins similar to Pseudomonas aeruginosa (Pae) LigD, subgroup 3. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. It has been suggested that LigD Pol contributes to NHEJ-mediated repair DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The Pol domains of PaeLigD and Mycobacterium tuberculosis (Mt)LigD are stimulated by manganese, are error-prone, and prefer adding rNTPs to dNTPs in vitro; however PaeLigD and MtLigD belong to other subgroups, proteins in this subgroup await functional characterization.
Pssm-ID: 240136 [Multi-domain] Cd Length: 223 Bit Score: 134.47 E-value: 8.27e-38
MtLigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Mycobacterium ...
30-265
1.15e-37
MtLigD_Pol_like: Polymerase (Pol) domain of bacterial LigD proteins similar to Mycobacterium tuberculosis (Mt)LigD. The LigD Pol domain belongs to the archaeal/eukaryal primase (AEP) superfamily. In prokaryotes, LigD along with Ku is required for non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB). NHEJ-mediated DNA DSB repair is error-prone. MtLigD is monomeric and contains an N-terminal Pol domain, a central phosphoesterase module, and a C-terminal ligase domain. It has been suggested that LigD Pol contributes to NHEJ-mediated DNA DSB repair in vivo, by filling in short 5'-overhangs with ribonucleotides; the filled in termini would then be sealed by the associated LigD ligase domain, resulting in short stretches of RNA incorporated into the genomic DNA. The MtLigD Pol domain is stimulated by manganese, is error-prone, and prefers adding rNTPs to dNTPs in vitro. The MtLigD Pol domain has been shown to prefer DNA gapped substrates containing a 5'-phosphate group at the gap.
Pssm-ID: 240133 [Multi-domain] Cd Length: 231 Bit Score: 134.45 E-value: 1.15e-37
AE_Prim_S_like: primase domain similar to that found in the small subunit of archaeal and ...
51-190
3.16e-13
AE_Prim_S_like: primase domain similar to that found in the small subunit of archaeal and eukaryotic (A/E) DNA primases. The replication machineries of A/Es are distinct from that of bacteria. Primases are DNA-dependent RNA polymerases which synthesis the short RNA primers required for DNA replication. In eukaryotes, this small catalytically active primase subunit (p50) and a larger primase subunit (p60), referred to jointly as the core primase, associate with the B subunit and the DNA polymerase alpha subunit in a complex, called Pol alpha-pri. In addition to its catalytic role in replication, eukaryotic DNA primase may play a role in coupling replication to DNA damage repair and in checkpoint control during S phase. Pfu41 and Pfu46 comprise the primase complex of the archaea Pyrococcus furiosus; these proteins have sequence identity to the eukaryotic p50 and p60 primase proteins respectively. Pfu41 preferentially uses dNTPs as substrate. Pfu46 regulates the primase activity of Pfu41. Also found in this group is the primase-polymerase (primpol) domain of replicases from archaeal plasmids including the ORF904 protein of pRN1 from Sulfolobus islandicus (pRN1 primpol). The pRN1 primpol domain exhibits DNA polymerase and primase activities; a cluster of active site residues (three acidic residues, and a histidine) is required for both these activities. The pRN1 primpol primase activity prefers dNTPs to rNTPs; however incorporation of dNTPs requires rNTP as cofactor. This group also includes the Pol domain of bacterial LigD proteins such Mycobacterium tuberculosis (Mt)LigD. MtLigD contains an N-terminal Pol domain, a central phosphoesterase module, and a C-terminal ligase domain. LigD Pol plays a role in non-homologous end joining (NHEJ)-mediated repair of DNA double-strand breaks (DSB) in vivo, perhaps by filling in short 5'-overhangs with ribonucleotides; the filled in termini would be sealed by the associated LigD ligase domain. The MtLigD Pol domain is stimulated by manganese, is error-prone, and prefers adding rNTPs to dNTPs in vitro.
Pssm-ID: 238291 [Multi-domain] Cd Length: 136 Bit Score: 65.85 E-value: 3.16e-13
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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