Construction of a chimeric biosynthetic pathway for the de novo biosynthesis of rosmarinic acid in Escherichia coli.

Construction of a chimeric biosynthetic pathway for the de novo biosynthesis of rosmarinic acid in Escherichia coli.
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DOI:
10.1002/cbic.201402275
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发表时间:
2014-11-03
期刊:
影响因子:
3.2
通讯作者:
Schmidt-Dannert, Claudia
Schmidt-Dannert, Claudia
中科院分区:
生物学3区
文献类型:
--
作者:
Bloch, Sarah E.;Schmidt-Dannert, Claudia

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羟基肉桂酸酯(HCES)是一种广泛分布的苯丙类植物天然产物。迷迭香酸(RA 7)是最广为人知的HCE,它显示出治疗癌症和神经疾病的前景。与从植物材料或植物细胞培养中提取不同,HCES的微生物生产平台可以提供一种可持续的、受控的生产手段。通过一个六酶嵌合的细菌和植物途径的过表达,我们展示了RA7和相关的HCE异丙酸(IA 8)在大肠杆菌中的从头合成。通过前体补充探索该途径,发现了几个潜在的途径瓶颈。我们显示了三个植物RAS同源物的HCE生物合成,表现出不同水平的HCE生物合成,但产生相同比例的IA 8和RA 7。这项工作为使用模块化生物合成方法获得各种天然和非天然HCE的微生物生产平台的概念提供了验证。
Hydroxycinnamic acid esters (HCEs) are widely-distributed phenylpropanoid-derived plant natural products. Rosmarinic acid (RA 7), the most well-known HCE, shows promise as a treatment for cancer and neurological disorders. In contrast to extraction from plant material or plant cell culture, a microbial production platform for HCEs could provide a sustainable, controlled means of production. Through the overexpression of a six-enzyme chimeric bacterial and plant pathway, we show the de novo biosynthesis of RA 7 and the related HCE isorinic acid (IA 8) in E. coli. Probing the pathway through precursor supplementation showed several potential pathway bottlenecks. We show HCE biosynthesis using three plant RAS orthologs exhibiting different levels of HCE biosynthesis, but the same ratio of IA 8 to RA 7 produced. This work serves as a proof of concept for a microbial production platform for HCEs using a modular biosynthetic approach to access diverse natural and non-natural HCEs.
DOI: 10.1111/j.1432-1033.1994.00439.x
发表时间: 1994-09-01
期刊: EUROPEAN JOURNAL OF BIOCHEMISTRY
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