CATH Classification

Domain Context

CATH Clusters

Superfamily T4 endonuclease V
Functional Family Pyrimidine dimer DNA glycosylase/Endonuclease V

Enzyme Information

3.2.2.17
Deoxyribodipyrimidine endonucleosidase.
based on mapping to UniProt P04418
Cleaves the N-glycosidic bond between the 5'-pyrimidine residue in cyclobutadipyrimidine (in DNA) and the corresponding deoxy-D-ribose residue.
4.2.99.18
DNA-(apurinic or apyrimidinic site) lyase.
based on mapping to UniProt P04418
The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate.
-!- 'Nicking' of the phosphodiester bond is due to a lyase-type reaction, not hydrolysis. -!- This group of enzymes was previously listed as endonucleases, under the number EC 3.1.25.2.

UniProtKB Entries (1)

P04418
END5_BPT4
Enterobacteria phage T4
Endonuclease V

PDB Structure

PDB 2END
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal structure of a pyrimidine dimer-specific excision repair enzyme from bacteriophage T4: refinement at 1.45 A and X-ray analysis of the three active site mutants.
Morikawa, K., Ariyoshi, M., Vassylyev, D.G., Matsumoto, O., Katayanagi, K., Ohtsuka, E.
J.Mol.Biol.