Araf51 with improved transglycosylation activities: one engineered biocatalyst for one specific acceptor
作者:Alizé Pennec、Richard Daniellou、Pascal Loyer、Caroline Nugier-Chauvin、Vincent Ferrières
DOI:10.1016/j.carres.2014.10.031
日期:2015.1
were selected on their ability to catalyze the transglycosylation reaction of p-nitrophenyl α-L-arabinofuranoside (pNP-Araf) used as a donor and various aliphatic alcohols as acceptors. This screening strategy underlined 5 interesting clones, each one corresponding to one acceptor. They appeared to be much more efficient in the transglycosylation reaction compared to the wild type enzyme whereas no self-condensation
为了获得用于合成烷基阿拉伯呋喃糖苷的有效生物催化剂,已经进行了阿拉伯呋喃呋喃糖基水解酶Araf51的随机诱变。选择突变体是基于其催化用作供体的对硝基苯基α-L-阿拉伯呋喃糖苷(pNP-Araf)和各种脂族醇作为受体的转糖基化反应的能力。这种筛选策略强调了5个有趣的克隆,每个克隆对应一个受体。与野生型酶相比,它们在转糖基化反应中似乎更有效,而未检测到自缩合或水解产物。此外,突变体对已为其选择了醇的高特异性证实了筛选过程。突变酶的序列分析表明,