作者:Takeo Ito、Steven E. Rokita
DOI:10.1021/ja045637n
日期:2004.12.1
attached TMDN strongly modulated charge transfer as evident by a 60-fold decrease in reduction of the distal (Br)U when the counterbase A was substituted for C. An inverse relationship between this reduction and quenching of TMDN fluorescence by the counterbase was also discovered and is consistent with a competition between radical recombination and electron migration away from the initial site of its injection
开发了一种基于光诱导反应和随后裂解含有溴脱氧尿苷 ((Br)U) 残基和无碱基位点的双链体 DNA 的检测方法,用于筛选芳香胺通过还原电子供体启动电荷转移的能力。两个候选物 N,N,N',N'-四甲基-1,5-二氨基萘 (TMDN) 和 1,5-二氨基萘 (DAN) 表达了所需的活性,随后制备了寡脱氧核苷酸-TMDN 缀合物以鉴定其他影响电子注入和转移到 DNA 的效率的变量。该系统仅表现出对分子氧的轻度敏感性,但受到高浓度 2-巯基乙醇的强烈抑制。