Identification of the Bacterial Maytansinoid Gene Cluster asc Provides Insights into the Post-PKS Modifications of Ansacarbamitocin Biosynthesis.
Identification of the Bacterial Maytansinoid Gene Cluster asc Provides Insights into the Post-PKS Modifications of Ansacarbamitocin Biosynthesis.
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细菌美登木素生物碱基因簇 asc 的鉴定为安沙卡巴胺生物合成的 PKS 后修饰提供了见解。
DOI:
10.1021/acs.orglett.9b01891
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发表时间:
2019-07
期刊:
影响因子:
--
通讯作者:
Shen Yuemao
中科院分区:
文献类型:
--
作者:
Li Xiaoman;Wu Xingkang;Shen Yuemao
A new biosynthetic gene cluster for the bacterial maytansinoids, ansacarbamitocins (ASCs), was identified in Amycolatopsis alba DSM 44262. The post-PKS modifications of ASCs were elucidated on the basis of bioinformatics analysis. Specific gene disruption and heterologous expression led to the isolation of seven new bacterial maytansinoids. The 3'-O-methyltransferase and 3-O-carbamyltransferase involved in bacterial maytansinoid biosynthesis were identified for the first time. The new bacterial maytansinoids 7 and 13 showed strong antitumor activities against four human cancer cell lines.
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