A0A2A4Q3R5 · A0A2A4Q3R5_9BACT
- ProteinEndonuclease III
- Genenth
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids218 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
DNA repair enzyme that has both DNA N-glycosylase activity and AP-lyase activity. The DNA N-glycosylase activity releases various damaged pyrimidines from DNA by cleaving the N-glycosidic bond, leaving an AP (apurinic/apyrimidinic) site. The AP-lyase activity cleaves the phosphodiester bond 3' to the AP site by a beta-elimination, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate.
Catalytic activity
- 2'-deoxyribonucleotide-(2'-deoxyribose 5'-phosphate)-2'-deoxyribonucleotide-DNA = a 3'-end 2'-deoxyribonucleotide-(2,3-dehydro-2,3-deoxyribose 5'-phosphate)-DNA + a 5'-end 5'-phospho-2'-deoxyribonucleoside-DNA + H+
Cofactor
Note: Binds 1 [4Fe-4S] cluster.
GO annotations
Aspect | Term | |
---|---|---|
Molecular Function | 4 iron, 4 sulfur cluster binding | |
Molecular Function | class I DNA-(apurinic or apyrimidinic site) endonuclease activity | |
Molecular Function | DNA binding | |
Molecular Function | DNA N-glycosylase activity | |
Molecular Function | endonuclease activity | |
Molecular Function | metal ion binding | |
Biological Process | base-excision repair, AP site formation |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameEndonuclease III
- EC number
- Alternative names
Gene names
Organism names
- Taxonomic lineageBacteria > Candidatus Kaiserbacteria
Accessions
- Primary accessionA0A2A4Q3R5
Proteomes
Structure
Sequence
- Sequence statusComplete
- Length218
- Mass (Da)25,087
- Last updated2017-12-20 v1
- Checksum864DB51B2E642CE7
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
NVSE01000031 EMBL· GenBank· DDBJ | PCH91213.1 EMBL· GenBank· DDBJ | Genomic DNA |