LU Changyuan, HAN Zhenhui, YAO Side, et al. DIRECT OBSERVATION OF SITE—SELECTIVE DAMAGE OF DNA BY FLAVIN PHOTONUCLEASE[J]. Journal of Radiation Research and Radiation Processing, 2001,19(1):65-66.
LU Changyuan, HAN Zhenhui, YAO Side, et al. DIRECT OBSERVATION OF SITE—SELECTIVE DAMAGE OF DNA BY FLAVIN PHOTONUCLEASE[J]. Journal of Radiation Research and Radiation Processing, 2001,19(1):65-66.DOI:
The interaction of oxidized FAD radical with dGMP, dAMP and single—stranded DNA (ssDNA) was investigated in neutral aqueous solution using time—resolved 248 nm laser flash photolysis aimed at elucidation of the initial photosensitization mechanism. The characterized absorption spectra of transient species were observed. Moreover,direct observation of stabilized DNA guanyl radical has provided transient evidence for site—selective photosensitized damage of DNA at guanine moiety, which has simulated the major initial species produced by the direct effect of ionizing radiation or UV light on DNA.