作者:Robert L. Sinsheimer、Ruth Hastings
DOI:10.1126/science.110.2864.525
日期:1949.11.18
Various lines of evidence (1, 3, 4) have suggested that the primary effect of lethal and mutagenic doses of ultraviolet radiations upon living cells may be partially reversible, or at least compensated within the cell. In connection with a general study of the photochemistry of nucleic acid derivatives, we have discovered that, under certain conditions, the initial photodecomposition product of the
各种证据 (1, 3, 4) 表明,致死和致突变剂量的紫外线辐射对活细胞的主要影响可能是部分可逆的,或者至少在细胞内得到补偿。结合核酸衍生物光化学的一般研究,我们发现,在某些条件下,嘧啶的初始光分解产物尿嘧啶和核糖核苷酸的相应产物尿苷可能自发地恢复到初始状态。分别是尿嘧啶和尿苷。