S-腺苷甲硫氨酸依赖性甲基转移酶是用于许多化合物(例如药物)特定烷基化的多功能工具,但由于缺乏辅因子再生系统,其生物催化应用受到严重限制。我们报告了一种仿生的,基于多磷酸盐的环状级联反应,用于甲基转移酶。除了要被甲基化的底物以外,仅必须以化学计量的量添加甲硫氨酸和多磷酸盐。该系统相对于辅因子前体腺苷在所选底物的甲基化和乙基化反应中起催化作用,如HPLC分析所示。此外,1 H和13进行13 C NMR测量以明确鉴定甲硫氨酸为甲基供体,并深入了解反应的选择性。该系统构成了开发甲基转移酶的经济和环保应用的关键阶段。
synthesized and evaluated as inhibitors of the purified E. coli cyclopropane fatty acid synthase, a model for M. tuberculosis cyclopropane synthases that are potential targets for antituberculous drugs. Our results show that the presence of the adenosine moiety, in the inhibitor, is required for strong binding, but that the sulfonium charge is less important. The best inhibitors found were S-adenosyl-l-homocysteine