Identification and Heterologous Production of a Benzoyl-Primed Tricarboxylic Acid Polyketide Intermediate from the Zaragozic Acid A Biosynthetic Pathway.

Identification and Heterologous Production of a Benzoyl-Primed Tricarboxylic Acid Polyketide Intermediate from the Zaragozic Acid A Biosynthetic Pathway.
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DOI:
10.1021/acs.orglett.7b01534
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发表时间:
2017-07-07
期刊:
影响因子:
5.2
通讯作者:
Tang Y
Tang Y
中科院分区:
化学1区
文献类型:
--
作者:
Liu N;Hung YS;Gao SS;Hang L;Zou Y;Chooi YH;Tang Y

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Zaragozic acid A(1)是一种有效的降低胆固醇的聚酮类天然产物,由各种丝状真菌制成。利用工程真菌异源寄主完成了负责1生物合成途径初始步骤的酶的重组。这些初始步骤的特点是将苯甲酸起始单元引物到高度还原的聚酮合成酶(HRPKS)上,然后是草酰乙酸延伸和产物释放,生成含有三羧酸的产物2。重组研究表明,只需要三种酶,HRPKS,柠檬酸合成酶和水解酶,就可以产生结构复杂的产物。
Zaragozic acid A (1) is a potent cholesterol lowering, polyketide natural product made by various filamentous fungi. The reconstitution of enzymes responsible for the initial steps of the biosynthetic pathway of 1 is accomplished using an engineered fungal heterologous host. These initial steps feature the priming of a benzoic acid starter unit onto a highly reducing polyketide synthase (HRPKS), followed by oxaloacetate extension and product release to generate a tricarboxylic-acid containing product 2. The reconstitution studies demonstrated only three enzymes, HRPKS, citrate synthase and hydrolase, are needed in A. nidulans to produce the structurally complex product.
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