Heterologous Production of the C33–C45 Polyketide Fragment of Anticancer Apratoxins in a Cyanobacterial Host
作者:Dipesh Dhakal、Dimitris Kallifidas、Manyun Chen、Sofia Kokkaliari、Qi-Yin Chen、Valerie J. Paul、Yousong Ding、Hendrik Luesch
DOI:10.1021/acs.orglett.3c00462
日期:——
subcluster of cytotoxic apratoxin A was isolated from a Moorena bouillonii environmental DNA library and engineered with a thioesterase II domain for heterologous expression in the filamentous cyanobacterium Anabaena sp. PCC7120. Further engineering with a rhamnose-inducible promoter led to the production of (2R,3R,5R,7R)-3,7-dihydroxy-2,5,8,8-tetramethylnonanoic acid, a stereogenically rich chiral building
从Moorena bouillonii环境 DNA 文库中分离出细胞毒性 apratoxin A 的聚酮化合物合酶亚群,并用硫酯酶 II 结构域进行改造,用于在丝状蓝藻鱼腥藻中进行异源表达。PCC7120。使用鼠李糖诱导型启动子进一步工程化导致产生 (2 R ,3 R ,5 R ,7 R )-3,7-dihydroxy-2,5,8,8-tetramethylnonanoic acid,一种富含立体异构的手性结构单元这对于高效合成 apratoxin 类似物很重要,代表了此类聚酮化合物片段的首次合成生物学尝试。