Enzymatic ketone reduction: mapping the substrate profile of a short-chain alcohol dehydrogenase (YMR226c) from Saccharomyces cerevisiae
作者:Yan Yang、Dunming Zhu、Timothy J. Piegat、Ling Hua
DOI:10.1016/j.tetasy.2007.08.008
日期:2007.8
dehydrogenase (YMR226c) was found to effectively catalyze the enantioselective reductions of aryl-substituted acetophenones, α-chloroacetophenones, aliphatic ketones, and α- and β-ketoesters. While the enantioselectivity for the reduction of β-ketoesters was moderate, the acetophenone derivatives, aromatic α-ketoesters, some substituted α-chloroacetophenones, and aliphatic ketones were reduced to the
克隆了酿酒酵母的短链醇脱氢酶(YMR226c)并在大肠杆菌中表达,并纯化了编码的蛋白质。用一系列酮评估该重组酶的活性和对映选择性。发现醇脱氢酶(YMR226c)有效催化芳基取代的苯乙酮,α-氯苯乙酮,脂肪族酮以及α-和β-酮酸酯的对映选择性还原。尽管还原β-酮酸酯的对映选择性中等,但苯乙酮衍生物,芳族α-酮酸酯,一些取代的α-氯苯乙酮和脂族酮被还原为具有优异对映选择性的相应手性醇。该酶的对映体一般遵循简单酮的Prelog法则。酯官能度在确定酶对α-和β-酮酸酯还原的对映体选择中起一定作用。