M. Kai et al., A NEW DROSOPHILA ULTRAVIOLET LIGHT-DAMAGED DNA RECOGNITION ENDONUCLEASE THAT SELECTIVELY NICKS A (6-4)-PHOTOPRODUCT SITE, Biochimica et biophysica acta, N. Gene structure and expression, 1397(2), 1998, pp. 180-188
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 M
g++. D-DDB P1 can catalyze an incision immediately on the 3' and 5' si
des of, the (6-4) photoproduct site. (C) 1998 Elsevier Science B.V.