the discovery of a broad substrate scope with respect to both acceptor molecules and donor sugars. In addition to polyphenols, including anthraquinones, simple aromatics containing primary or secondary alcohols, a variety of complex natural products and synthetic drugs were glucosylated or xylosylated by Sv0189. Regioselectivity was established through the isolation and characterization of glucosylated
鉴定了来自委内链霉菌I
SP5230(A
TCC 10721)的GT1家族糖基转移酶Sv0189 。
重组产生的蛋白Sv0189具有
UDP-糖基转移酶活性。使用非天然
硝基苯基糖苷作为活化的供体的试验进行的筛选导致发现了关于受体分子和供体糖的广泛的底物范围。除了多
酚(包括
蒽醌),含有伯醇或仲醇的简单芳族化合物之外,Sv0189还对各种复杂的
天然产物和合成药物进行了糖基化或
木糖基化。通过糖基化产物的分离和表征来建立区域选择性。Sv0189和同源蛋白在链霉菌中广泛分布 物种及其明显的底物混杂性揭示了它们作为糖多样化
生物催化剂的发展潜力。