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Information on EC 3.2.2.27 - uracil-DNA glycosylase

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EC Tree
     3 Hydrolases
         3.2 Glycosylases
             3.2.2 Hydrolysing N-glycosyl compounds
                3.2.2.27 uracil-DNA glycosylase
IUBMB Comments
Uracil-DNA glycosylases are widespread enzymes that are found in all living organisms. EC 3.2.2.27 and double-stranded uracil-DNA glycosylase (EC 3.2.2.28) form a central part of the DNA-repair machinery since they initiate the DNA base-excision repair pathway by hydrolysing the N-glycosidic bond between uracil and the deoxyribose sugar thereby catalysing the removal of mis-incorporated uracil from DNA.
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UNIPROT: Q9V4D8
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Word Map
The enzyme appears in viruses and cellular organisms
Reaction Schemes
Hydrolyses single-stranded DNA or mismatched double-stranded DNA and polynucleotides, releasing free uracil
Synonyms
uracil-dna glycosylase, smug1, dna n-glycosylase, ung-1, ul114, uracil dna-glycosylase, uracil-dna n-glycosylase, uracil dna glycosylase 2, thd1p, mjudg, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SYSTEMATIC NAME
IUBMB Comments
uracil-DNA deoxyribohydrolase (uracil-releasing)
Uracil-DNA glycosylases are widespread enzymes that are found in all living organisms. EC 3.2.2.27 and double-stranded uracil-DNA glycosylase (EC 3.2.2.28) form a central part of the DNA-repair machinery since they initiate the DNA base-excision repair pathway by hydrolysing the N-glycosidic bond between uracil and the deoxyribose sugar thereby catalysing the removal of mis-incorporated uracil from DNA.
CAS REGISTRY NUMBER
COMMENTARY hide
59088-21-0
cf. EC 3.2.2.28
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
3,N4-ethenocytosine-mismatched double-stranded DNA + H2O
3,N4-ethenocytosine + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
5-fluorouracil-mismatched double-stranded DNA + H2O
5-fluorouracil + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
5-methylcytosine-mismatched double-stranded DNA + H2O
5-methylcytosine + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
thymine-mismatched double-stranded DNA + H2O
thymine + double-stranded DNA with abasic site
show the reaction diagram
uracil-mismatched double-stranded DNA + H2O
uracil + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
additional information
?
-
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
3,N4-ethenocytosine-mismatched double-stranded DNA + H2O
3,N4-ethenocytosine + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
5-fluorouracil-mismatched double-stranded DNA + H2O
5-fluorouracil + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
5-methylcytosine-mismatched double-stranded DNA + H2O
5-methylcytosine + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
thymine-mismatched double-stranded DNA + H2O
thymine + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
uracil-mismatched double-stranded DNA + H2O
uracil + double-stranded DNA with abasic site
show the reaction diagram
-
-
-
?
additional information
?
-
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
Q9V4D8_DROME
1738
0
191423
TrEMBL
-
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
60000
x * 60000, recombinant enzyme, SDS-PAGE
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
?
x * 60000, recombinant enzyme, SDS-PAGE
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene Thd1, phylogenetic analysis, functional expression of a His-tagged truncated variant comprising residues 650M-1063N in Escherichia coli strain BL21 (DE3)
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Hardeland, U.; Bentele, M.; Jiricny, J.; Schaer, P.
The versatile thymine DNA-glycosylase: a comparative characterization of the human, Drosophila and fission yeast orthologs
Nucleic Acids Res.
31
2261-2271
2003
Schizosaccharomyces pombe (O59825), Schizosaccharomyces pombe, Drosophila melanogaster (Q9V4D8), Drosophila melanogaster
Manually annotated by BRENDA team