uracil-DNA glycosylase family protein may be a DNA repair enzyme that catalyzes the removal of mismatched uracil from DNA to initiate DNA base excision repair pathway
uracil-DNA glycosylases (UDG) and related enzymes; Uracil-DNA glycosylases (UDGs) initiate ...
1-315
0e+00
uracil-DNA glycosylases (UDG) and related enzymes; Uracil-DNA glycosylases (UDGs) initiate repair of uracils in DNA. Uracil may arise from misincorporation of dUMP residues by DNA polymerase or via deamination of cytosine. Uracil in DNA mispaired with guanine is one of the major pro-mutagenic events, causing G:C->A:T mutations; thus, UDG is an essential enzyme for maintaining the integrity of genetic information. UDGs have been classified into various families on the basis of their substrate specificity, conserved motifs, and structural similarities. Although these families demonstrate different substrate specificities, often the function of one enzyme can be complemented by the other. UDG family 1 is the most efficient uracil-DNA glycosylase (UDG, also known as UNG) and shows a specificity for uracil in DNA. UDG family 2 includes thymine DNA glycosylase which removes uracil and thymine from G:U and G:T mismatches, and mismatch-specific uracil DNA glycosylase (MUG) which in Escherichia coli is highly specific to G:U mismatches, but also repairs G:T mismatches at high enzyme concentration. UDG family 3 includes Human SMUG1 which can remove uracil and its oxidized pyrimidine derivatives from, single-stranded DNA and double-stranded DNA with a preference for single-stranded DNA. Pedobacter heparinus SMUG2, which is UDG family 3 SMUG1-like, displays catalytic activities towards DNA containing uracil or hypoxanthine/xanthine. UDG family 4 includes Thermotoga maritima TTUDGA, a robust UDG which like family 1, acts on double-stranded and single-stranded uracil-containing DNA. UDG family 5 (UDGb) includes Thermus thermophilus HB8 TTUDGB which acts on double-stranded uracil-containing DNA; it is a hypoxanthine DNA glycosylase acting on double-stranded hypoxanthine-containing DNA except for the C/I base pair, as well as a xanthine DNA glycosylase which acts on both double-stranded and single-stranded xanthine-containing DNA. UDG family 6 hypoxanthine-DNA glycosylase lacks any detectable UDG activity; it excises hypoxanthine. Other UDG families include one represented by Bradyrhizobium diazoefficiens Blr0248 which prefers single-stranded DNA and removes uracil, 5-hydroxymethyl-uracil or xanthine from it.
The actual alignment was detected with superfamily member PHA03204:
Pssm-ID: 444933 Cd Length: 322 Bit Score: 627.76 E-value: 0e+00
uracil-DNA glycosylase; All proteins in this family for which functions are known are ...
99-306
9.51e-119
uracil-DNA glycosylase; All proteins in this family for which functions are known are uracil-DNA glycosylases that function in base excision repair. 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: 273182 Cd Length: 211 Bit Score: 340.34 E-value: 9.51e-119
Uracil DNA glycosylase family 1 subfamily, includes Human uracil DNA glycosylase and similar ...
114-311
1.75e-101
Uracil DNA glycosylase family 1 subfamily, includes Human uracil DNA glycosylase and similar proteins; Uracil DNA glycosylase family 1 is the most efficient of all uracil-DNA glycosylases (UDGs, also known as UNGs) and shows a specificity for uracil in DNA. UDG catalyzes the removal of uracil from DNA to initiate the DNA base excision repair pathway. Uracil in DNA can arise as a result of mis-incorporation of dUMP residues by DNA polymerase or deamination of cytosine. Uracil mispaired with guanine in DNA is one of the major pro-mutagenic events, causing G:C->A:T mutations. Thus, UDG is an essential enzyme for maintaining the integrity of genetic information. UDGs have been classified into various families on the basis of their substrate specificity, conserved motifs, and structural similarities. Although these families demonstrate different substrate specificities, often the function of one enzyme can be complemented by the other.
Pssm-ID: 381678 Cd Length: 200 Bit Score: 295.90 E-value: 1.75e-101
uracil-DNA glycosylase; All proteins in this family for which functions are known are ...
99-306
9.51e-119
uracil-DNA glycosylase; All proteins in this family for which functions are known are uracil-DNA glycosylases that function in base excision repair. 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: 273182 Cd Length: 211 Bit Score: 340.34 E-value: 9.51e-119
Uracil DNA glycosylase family 1 subfamily, includes Human uracil DNA glycosylase and similar ...
114-311
1.75e-101
Uracil DNA glycosylase family 1 subfamily, includes Human uracil DNA glycosylase and similar proteins; Uracil DNA glycosylase family 1 is the most efficient of all uracil-DNA glycosylases (UDGs, also known as UNGs) and shows a specificity for uracil in DNA. UDG catalyzes the removal of uracil from DNA to initiate the DNA base excision repair pathway. Uracil in DNA can arise as a result of mis-incorporation of dUMP residues by DNA polymerase or deamination of cytosine. Uracil mispaired with guanine in DNA is one of the major pro-mutagenic events, causing G:C->A:T mutations. Thus, UDG is an essential enzyme for maintaining the integrity of genetic information. UDGs have been classified into various families on the basis of their substrate specificity, conserved motifs, and structural similarities. Although these families demonstrate different substrate specificities, often the function of one enzyme can be complemented by the other.
Pssm-ID: 381678 Cd Length: 200 Bit Score: 295.90 E-value: 1.75e-101
Uracil DNA glycosylase family 1, includes Human uracil DNA glycosylase, Vaccinia virus protein ...
149-285
7.62e-44
Uracil DNA glycosylase family 1, includes Human uracil DNA glycosylase, Vaccinia virus protein D4, Nitratifractor salsuginis UNG and similar proteins; Uracil DNA glycosylase family 1 is the most efficient of all uracil-DNA glycosylases (UDGs, also known as UNGs) and shows a specificity for uracil in DNA. UDG catalyzes the removal of uracil from DNA to initiate the DNA base excision repair pathway. Uracil in DNA can arise as a result of misincorporation of dUMP residues by DNA polymerase or deamination of cytosine. Uracil mispaired with guanine in DNA is one of the major pro-mutagenic events, causing G:C->A:T mutations. Thus, UDG is an essential enzyme for maintaining the integrity of genetic information. UDGs have been classified into various families on the basis of their substrate specificity, conserved motifs, and structural similarities. Although these families demonstrate different substrate specificities, often the function of one enzyme can be complemented by the other. More distant members of UDG family 1 include Nitratifractor salsuginis UNG (NsaUNG) and Vaccinia virus (VAVC) protein D4 uracil-DNA glycosylase, a subunit of the VACV DNA polymerase holoenzyme. NsaUNG only exhibits robust enzymatic activity on uracil-containing DNAs, in particular double-stranded uracil-containing substrates; it does not act on hypoxanthine- and xanthine-containing substrates. NsUNG is not inhibited by Ugi protein that specifically inhibits conventional family 1 UDGs. D4, in addition to excising uracil residues from DNA, is part of a heterodimeric processivity factor which potentiates the DNA polymerase activity.
Pssm-ID: 381686 Cd Length: 135 Bit Score: 146.71 E-value: 7.62e-44
uracil-DNA glycosylases (UDG) and related enzymes; Uracil-DNA glycosylases (UDGs) initiate ...
149-285
2.21e-13
uracil-DNA glycosylases (UDG) and related enzymes; Uracil-DNA glycosylases (UDGs) initiate repair of uracils in DNA. Uracil may arise from misincorporation of dUMP residues by DNA polymerase or via deamination of cytosine. Uracil in DNA mispaired with guanine is one of the major pro-mutagenic events, causing G:C->A:T mutations; thus, UDG is an essential enzyme for maintaining the integrity of genetic information. UDGs have been classified into various families on the basis of their substrate specificity, conserved motifs, and structural similarities. Although these families demonstrate different substrate specificities, often the function of one enzyme can be complemented by the other. UDG family 1 is the most efficient uracil-DNA glycosylase (UDG, also known as UNG) and shows a specificity for uracil in DNA. UDG family 2 includes thymine DNA glycosylase which removes uracil and thymine from G:U and G:T mismatches, and mismatch-specific uracil DNA glycosylase (MUG) which in Escherichia coli is highly specific to G:U mismatches, but also repairs G:T mismatches at high enzyme concentration. UDG family 3 includes Human SMUG1 which can remove uracil and its oxidized pyrimidine derivatives from, single-stranded DNA and double-stranded DNA with a preference for single-stranded DNA. Pedobacter heparinus SMUG2, which is UDG family 3 SMUG1-like, displays catalytic activities towards DNA containing uracil or hypoxanthine/xanthine. UDG family 4 includes Thermotoga maritima TTUDGA, a robust UDG which like family 1, acts on double-stranded and single-stranded uracil-containing DNA. UDG family 5 (UDGb) includes Thermus thermophilus HB8 TTUDGB which acts on double-stranded uracil-containing DNA; it is a hypoxanthine DNA glycosylase acting on double-stranded hypoxanthine-containing DNA except for the C/I base pair, as well as a xanthine DNA glycosylase which acts on both double-stranded and single-stranded xanthine-containing DNA. UDG family 6 hypoxanthine-DNA glycosylase lacks any detectable UDG activity; it excises hypoxanthine. Other UDG families include one represented by Bradyrhizobium diazoefficiens Blr0248 which prefers single-stranded DNA and removes uracil, 5-hydroxymethyl-uracil or xanthine from it.
Pssm-ID: 381677 Cd Length: 125 Bit Score: 65.87 E-value: 2.21e-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.
Click on the triangle to view details about the feature, including a multiple sequence alignment
of your query sequence and the protein sequences used to curate the domain model,
where hash marks (#) above the aligned sequences show the location of the conserved feature residues.
The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
Click on the triangle for interactive 3D structure viewing options.
Functional characterization of the conserved domain architecture found on the query.
Click here to see more details.
This image shows a graphical summary of conserved domains identified on the query sequence.
The Show Concise/Full Display button at the top of the page can be used to select the desired level of detail: only top scoring hits
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
to which they have been assigned. Hits with scores that pass a domain-specific threshold
(specific hits) are drawn in bright colors.
Others (non-specific hits) and
superfamily placeholders are drawn in pastel colors.
if a domain or superfamily has been annotated with functional sites (conserved features),
they are mapped to the query sequence and indicated through sets of triangles
with the same color and shade of the domain or superfamily that provides the annotation. Mouse over the colored bars or triangles to see descriptions of the domains and features.
click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
or click on the triangles, if present, that represent functional sites (conserved features)
mapped to the query sequence.
Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
(illustrated example)
and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
meet or exceed the RPS-BLAST threshold for statistical significance (default E-value cutoff of 0.01, or an E-value selected by user via the
advanced search options)
the domain superfamily to which the specific and non-specific hits belong
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
(CDART).
Modify your query to search against a different database and/or use advanced search options
