Discovery of a Dual Function Cytochrome P450 that Catalyzes Enyne Formation in Cyclohexanoid Terpenoid Biosynthesis
作者:Yu‐Rong Chen、Annavareddi Naresh、Suh‐Yuen Liang、Chun‐Hung Lin、Rong‐Jie Chein、Hsiao‐Ching Lin
DOI:10.1002/anie.202004435
日期:2020.8.3
potential ecological roles. Identified here is the biosynthetic gene cluster and characterization of two crucial enzymes in the biosynthesis of 1 . A P450 monooxygenase that has a dual function, to first catalyze dehydrogenation of the prenyl chain to generate a cis‐diene intermediate and then serve as an acetylenase to yield an alkyne moiety, and thus the 1,3‐enyne, was discovered. A UbiA prenyltransferase
1,3-烯炔部分通常在内生性和植物病原性真菌产生的环己酸类天然产物中发现。Asperpentyn(1)是一种含有1,3-烯炔-cyclohexanoid萜类化合物分离自曲霉属和拟盘多毛。尽管具有潜在的生态作用,但1中的1,3-烯炔生物合成的遗传基础和生化机制以及其他包含该基序的天然产物仍然是令人难以置信的。在此确定的是生物合成基因簇,并表征了1的生物合成中的两种关键酶。具有双重功能的P450单加氧酶首先催化异戊二烯链的脱氢反应生成顺式-二烯中间体,然后用作乙炔酶以生成炔烃部分,因此发现了1,3-烯炔。UbiA异戊二烯基转移酶的特征还在于,它不寻常之处在于它倾向于将五碳异戊烯基链而不是聚异戊二烯链转移到对羟基苯甲酸受体上。