Dissecting modular synthases through inhibition: A complementary chemical and genetic approach
作者:Christopher R. Vickery、Ian P. McCulloch、Eva C. Sonnenschein、Joris Beld、Joseph P. Noel、Michael D. Burkart
DOI:10.1016/j.bmcl.2019.126820
日期:2020.1
Modular synthases, such as fatty acid, polyketide, and non-ribosomal peptide synthases (NRPSs), are sophisticated machineries essential in both primary and secondary metabolism. Various techniques have been developed to understand their genetic background and enzymatic abilities. However, uncovering the actual biosynthetic pathways remains challenging. Herein, we demonstrate a pipeline to study an
模块化合酶,例如脂肪酸,聚酮化合物和非核糖体肽合酶(NRPS),是在初级和次级代谢中必不可少的复杂机制。已经开发了各种技术来了解其遗传背景和酶促能力。然而,揭示实际的生物合成途径仍然具有挑战性。在本文中,我们展示了通过询问BpsA(一种产生蓝色3,3'-联吡啶基颜料靛蓝苷的NRPS)的各个酶结构域的酶功能来研究装配线合酶的管道。获得或合成了针对BpsA的每个生物合成域的特异性抑制剂,并通过在体外和在活细菌中的色素发育来监测BpsA在添加每种抑制剂后的酶促性能。使用遗传突变体使每个结构域失活验证了结果。最后,该结果补充了目前提出的BpsA的生物合成途径。