nucleotidyltransferase domain-containing protein of family X DNA polymerases which includes eukaryotic Pol beta, Pol lambda, Pol mu, and terminal deoxyribonucleotidyl transferase (TdT).
Nucleotidyltransferase (NT) domain of family X DNA Polymerases; X family polymerases fill in ...
17-240
6.09e-101
Nucleotidyltransferase (NT) domain of family X DNA Polymerases; X family polymerases fill in short gaps during DNA repair. They are relatively inaccurate enzymes and play roles in base excision repair, in non-homologous end joining (NHEJ) which acts mainly to repair damage due to ionizing radiation, and in V(D)J recombination. This family includes eukaryotic Pol beta, Pol lambda, Pol mu, and terminal deoxyribonucleotidyl transferase (TdT). Pol beta and Pol lambda are primarily DNA template-dependent polymerases. TdT is a DNA template-independent polymerase. Pol mu has both template dependent and template independent activities. This subgroup 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 three carboxylate residues are fairly well conserved in this family.
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Pssm-ID: 143386 [Multi-domain] Cd Length: 307 Bit Score: 295.64 E-value: 6.09e-101
Nucleotidyltransferase (NT) domain of family X DNA Polymerases; X family polymerases fill in ...
17-240
6.09e-101
Nucleotidyltransferase (NT) domain of family X DNA Polymerases; X family polymerases fill in short gaps during DNA repair. They are relatively inaccurate enzymes and play roles in base excision repair, in non-homologous end joining (NHEJ) which acts mainly to repair damage due to ionizing radiation, and in V(D)J recombination. This family includes eukaryotic Pol beta, Pol lambda, Pol mu, and terminal deoxyribonucleotidyl transferase (TdT). Pol beta and Pol lambda are primarily DNA template-dependent polymerases. TdT is a DNA template-independent polymerase. Pol mu has both template dependent and template independent activities. This subgroup 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 three carboxylate residues are fairly well conserved in this family.
Pssm-ID: 143386 [Multi-domain] Cd Length: 307 Bit Score: 295.64 E-value: 6.09e-101
DNA polymerase beta palm; The catalytic region of DNA polymerase beta is split into three ...
56-168
6.69e-53
DNA polymerase beta palm; The catalytic region of DNA polymerase beta is split into three domains. An N-terminal fingers domain, a central palm domain and a C-terminal thumb domain. This entry represents the palm domain.
Pssm-ID: 464318 Cd Length: 110 Bit Score: 166.59 E-value: 6.69e-53
Nucleotidyltransferase (NT) domain of family X DNA Polymerases; X family polymerases fill in ...
17-240
6.09e-101
Nucleotidyltransferase (NT) domain of family X DNA Polymerases; X family polymerases fill in short gaps during DNA repair. They are relatively inaccurate enzymes and play roles in base excision repair, in non-homologous end joining (NHEJ) which acts mainly to repair damage due to ionizing radiation, and in V(D)J recombination. This family includes eukaryotic Pol beta, Pol lambda, Pol mu, and terminal deoxyribonucleotidyl transferase (TdT). Pol beta and Pol lambda are primarily DNA template-dependent polymerases. TdT is a DNA template-independent polymerase. Pol mu has both template dependent and template independent activities. This subgroup 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 three carboxylate residues are fairly well conserved in this family.
Pssm-ID: 143386 [Multi-domain] Cd Length: 307 Bit Score: 295.64 E-value: 6.09e-101
DNA polymerase beta palm; The catalytic region of DNA polymerase beta is split into three ...
56-168
6.69e-53
DNA polymerase beta palm; The catalytic region of DNA polymerase beta is split into three domains. An N-terminal fingers domain, a central palm domain and a C-terminal thumb domain. This entry represents the palm domain.
Pssm-ID: 464318 Cd Length: 110 Bit Score: 166.59 E-value: 6.69e-53
DNA polymerase beta thumb; The catalytic region of DNA polymerase beta is split into three ...
176-240
2.45e-21
DNA polymerase beta thumb; The catalytic region of DNA polymerase beta is split into three domains. An N-terminal fingers domain, a central palm domain and a C-terminal thumb domain. This entry represents the thumb domain.
Pssm-ID: 464317 [Multi-domain] Cd Length: 63 Bit Score: 83.96 E-value: 2.45e-21
Fingers domain of DNA polymerase lambda; DNA polymerases catalyze the addition of dNMPs onto ...
17-54
2.56e-13
Fingers domain of DNA polymerase lambda; DNA polymerases catalyze the addition of dNMPs onto the 3-prime ends of DNA chains. There is a general polymerase fold consisting of three subdomains that have been likened to the fingers, palm, and thumb of a right hand. DNA_pol_lambd_f is the central three-helical region of DNA polymerase lambda referred to as the F and G helices of the fingers domain. Contacts with DNA involve this conserved helix-hairpin-helix motif in the fingers region which interacts with the primer strand. This motif is common to several DNA binding proteins and confers a sequence-independent interaction with the DNA backbone.
Pssm-ID: 463069 [Multi-domain] Cd Length: 51 Bit Score: 62.47 E-value: 2.56e-13
Nucleotidyltransferase (NT) domain of DNA polymerase beta and similar proteins; This ...
63-103
2.35e-06
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: 43.47 E-value: 2.35e-06
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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