Kai, M., Todo, T., Wada, M., Ryo, H., Masutani, C., Kobayashi, H., Morioka, H., Ohtsuka, E., Hanaoka, F., Sakaguchi, K. (1998). A new Drosophila ultraviolet light-damaged DNA recognition endonuclease that selectively nicks a (6-4) photoproduct site.  Biochim. Biophys. Acta 1397(2): 180--188.

FBrf0102339

Research paper

We have previously described the purification of an ultraviolet light (UV) damage-specific DNA-binding protein from Drosophila melanogaster, designated D-DDB P1 [Nucleic Acids Res., 23 (1995) 2600-2607]. Here, we obtained highly purified D-DDB P1 from Drosophila Kc cells, and we found that D-DDB P1 is also a nuclease. D-DDB P1 can selectively bind to pyrimidine (6-4) pyrimidone photoproducts, and in the presence of Mg++, D-DDB P1 can catalyze an incision immediately on the 3' and 5' sides of the (6-4) photoproduct site.