CAL-B-Catalyzed Acylation of Nucleosides and Role of the Sugar Conformation: An Improved Understanding of the Enzyme-Substrate Recognition
作者:Saúl Martínez-Montero、Susana Fernández、Yogesh S. Sanghvi、Vicente Gotor、Miguel Ferrero
DOI:10.1002/ejoc.201200609
日期:2012.10
that the sugar ring conformation of nucleosides plays a critical role during Candida antarctica lipase B (CAL-B) catalyzed acylation. Specifically, the North (N), but not the South (S) nucleosidesugar ring conformation is preferred for efficient binding at the catalytic site. In this study, we used nuclear magnetic resonance (NMR) spectroscopy experiments to establish the sugar ring conformation of nucleosides
我们证明核苷的糖环构象在南极念珠菌脂肪酶 B (CAL-B) 催化酰化过程中起着关键作用。具体而言,北 (N) 而非南 (S) 核苷糖环构象对于在催化位点的有效结合是优选的。在这项研究中,我们使用核磁共振 (NMR) 光谱实验来建立核苷的糖环构象,并进行分子建模研究以支持观察结果。与具有 S 构象的 2'-脱氧核苷相比,具有 N-构象的核糖和 2'-取代的 (OMe, F) 核苷经历快速而容易的酰化。这项研究提高了我们对糖构象在使用 CAL-B 进行生物转化过程中酶-底物识别中所起关键作用的理解。