Catalytic activity and enantioselectivity of lipase toward poor substrates bearing bulky substituents on both sides have been dramatically improved by rational design; the E value for a poor substrate was increased from 5 (wild-type enzyme) to >200 (I287F/I290A double mutant) with an acceleration of the reaction rate.
通过合理设计,
脂肪酶对两侧具有大取代基的差质底物的催化活性和对映选择性得到了显著提高;差质底物的E值从5(野生型酶)提高到>200(I287F/I290A双突变体),反应速率也加快。