Exploring the Promiscuous Enzymatic Activation of Unnatural Polyketide Extender Units in Vitro and in Vivo for Monensin Biosynthesis
作者:Marius Grote、Frank Schulz
DOI:10.1002/cbic.201800734
日期:2019.5.2
The incorporation of new-to-nature extender units into polyketide synthesis is an important source for diversity yet is restricted by limited availability of suitably activated building blocks in vivo. We here describe a straightforward workflow for the biogenic activation of commercially available new-to-nature extender units. Firstly, the substrate scope of a highly flexible malonyl co-enzyme A synthetase
在聚酮化合物合成中引入新的自然扩展剂是多样性的重要来源,但由于体内适当活化的构建基团的有限可用性而受到限制。我们在这里描述了用于商业上可利用的新的自然扩展剂单元的生物激活的简单工作流程。首先,表征了来自肉桂链霉菌的高柔性丙二酸辅酶A合成酶的底物范围。该结果与体内实验相匹配,在体内实验中,所述扩展剂单元被莫能菌素生物合成途径的聚酮化合物合酶和辅助酶所接受。通过利用酰基转移酶的固有底物混杂和下游酶功能,实验产生了一系列可预测的莫能菌素衍生物。