Rational Engineered C-Acyltransferase Transforms Sterically Demanding Acyl Donors
作者:Anna Żądło-Dobrowolska、Lucas Hammerer、Tea Pavkov-Keller、Karl Gruber、Wolfgang Kroutil
DOI:10.1021/acscatal.9b04617
日期:2020.1.17
The biocatalytic Friedel-Crafts acylation has been identified recently for the acetylation of resorcinol using activated acetic acid esters for the synthesis of acetophenone derivatives catalyzed by an acyltransferase. Because the wild-type enzyme is limited to acetic and propionic derivatives as the substrate, variants were designed to extend the substrate scope of this enzyme. By rational protein
最近已发现生物催化的Friedel-Crafts酰化反应可用于间苯二酚的乙酰化反应,该反应使用活化的乙酸酯进行乙酰基转移酶催化的苯乙酮衍生物的合成。因为野生型酶限于以乙酸和丙酸衍生物为底物,所以设计了变体以扩展该酶的底物范围。通过合理的蛋白质工程,鉴定了活性位点中的关键残基,该残基可被替换以结合更大的酰基部分。单点变体F148V能够转化以前无法获得的中等链长烷基和烷氧基烷基羧酸酯作为供体底物,转化率高达99%,分离产率高达99%。