DU Fuqiang, LIU Yuxia, TU Tiecheng, et al. ESR spin elimination research on reaction of triplet state of VK3 with nucleic acid derivatives[J]. Journal of Radiation Research and Radiation Processing, 2009,27(5):265-268.
DU Fuqiang, LIU Yuxia, TU Tiecheng, et al. ESR spin elimination research on reaction of triplet state of VK3 with nucleic acid derivatives[J]. Journal of Radiation Research and Radiation Processing, 2009,27(5):265-268.DOI:
In order to study the reaction of triplet state of VK,3, with nucleic acid derivatives, the ESR (Electron spin resonance) spin elimination has been used with 4-oxo-TEMPO as spin trap. The reactivities of ,3,VK,3,* with nucleosides, nucleotides, and models of telomeric DNA, template of telomerase RNA and its L6-P6 region have been confirmed respectively. The results show that the tendency of reaction of ,3,VK,3,* with nucleosides is Gua,>,Ade,>,Cyt,>,Thy, meanwhile dGMP,>,dAMP,>,dCMP,>, TMP for reaction of ,3,VK,3,* with deoxy-nucleotides, and the one for reaction of ,3,VK,3,* with telomeric DNA is the highest in polynucleotides. This is highly accordant with both of their corresponding rate constants determined by laser flash photolysis and their oxidation-reduction potentials. It also shows that the reactivity of ,3,VK,3,* with polynucleotides is directly proportional to their G amount.