知母宁（Chinonin）对辐照DNA电子自旋转移的初步研究

THE STUDY OF ELECTRON SPIN TRANSFER FROM γ-IRRADIATED DNA TO CHINONIN

研究受６０Ｃｏγ射线照射的知母宁、小牛胸腺ＤＮＡ和它们的分子混合物（知母宁和ＤＮＡ中的核苷酸摩尔比为１：１）的ＥＳＲ波谱，从波谱特征（ｇ因子、峰宽、峰高等）变化，说明辐照ＤＮＡ的电子自旋向知母宁分子转移，计算出自旋转移比率（ＴＲ值）为５．６３，推断知母宁通过电子自旋转移修复ＤＮＡ分子使ＤＮＡ的自由基消失。

The electron spin resonance(E. S. R) spectra of γ-irradiated DNA, chinonin and their mixture(the nucleotide and chinonin in mol ratio of 1: 1) were investigated at normal temparature. Based on g value, the shape and width and signal amplitude of ESR spectra, We may concluded that the electron spin may transfer from DNA to chinonin with a transfer ratio of 5.63.