Cloning and Heterologous Expression of the Cyclooctatin Biosynthetic Gene Cluster Afford a Diterpene Cyclase and Two P450 Hydroxylases
作者:Seung-Young Kim、Ping Zhao、Masayuki Igarashi、Ryuichi Sawa、Takeo Tomita、Makoto Nishiyama、Tomohisa Kuzuyama
DOI:10.1016/j.chembiol.2009.06.007
日期:2009.7
diphosphate (GGDP) synthase, terpene cyclase (CotB2), and two cytochromes P450, respectively. Incubation of the recombinant CotB2 with GGDP resulted in the formation of cyclooctat-9-en-7-ol, an unprecedented tricyclic diterpene alcohol. The present study establishes the complete biosynthetic pathway of cyclooctatin and provides insights into both the stereospecific diterpene cyclization mechanism of the GGDP
环辛抑素是一种以5-8-5稠环系统为特征的二萜,是一种有效的溶血磷脂酶抑制剂。在这里,我们报道了来自黑色链霉菌MI614-43F2的完整环辛抑素生物合成基因簇的克隆和表征,以及环孢抑素inS的异源生产。阿不思。序列分析加上亚克隆和基因删除揭示了最小的环辛抑素生物合成基因簇由四个基因cotB1tocotB4组成,分别编码香叶基香叶基二磷酸(GGDP)合酶,萜烯环化酶(CotB2)和两个细胞色素P450。重组CotB2与GGDP的孵育导致形成了史无前例的三环二萜醇cyclooctat-9-en-7-ol。