| Deoxyribodipyrimidine endonucleosidase | |
| Ec Number: | 3.2.2.17 |
| Cas Number: | 75302-33-9 |
Deoxyribodipyrimidine endonucleosidase (pyrimidine dimer DNA-glycosylase, endonuclease V, deoxyribonucleate pyrimidine dimer glycosidase, pyrimidine dimer DNA glycosylase, T4-induced UV endonuclease, PD-DNA glycosylase) is an enzyme with systematic name deoxy-D-ribocyclobutadipyrimidine polynucleotidodeoxyribohydrolase.[1] This enzyme catalyses the following chemical reaction
Cleaves the N-glycosidic bond between the 5'-pyrimidine residue in cyclobutadipyrimidine (in DNA) and the corresponding deoxy-D-ribose residue
The only family of enzymes known to have this activity is represented by a phage T4 protein. This family also has AP lyase activity against the AP site produced by this reaction.