Polyhydroxyalkanoic acids from structurally-unrelated carbon sources in Escherichia coli

Polyhydroxyalkanoic acids from structurally-unrelated carbon sources in Escherichia coli
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来自大肠杆菌中结构不相关的碳源的聚羟基链烷酸

DOI:
10.1007/s00253-013-4809-x
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发表时间:
2013-03
影响因子:
5
通讯作者:
Qingsheng Qi
Qingsheng Qi
中科院分区:
工程技术2区
文献类型:
--
作者:
Qian Wang;Qianqian Zhuang;Quanfeng Liang;Qingsheng Qi

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当存在结构相关的前体时,通常合成含有具有不同链长/结构的各种单体的聚羟基链烷酸酯(PHA)。过去,在微生物包括大肠杆菌中从无关碳源生物合成PHA遇到了许多挑战。近年来,随着代谢工程和合成生物学的发展,利用非相关碳源生产PHA的研究取得了突破性进展。含有2-羟基丙酸酯、3-羟基丙酸酯、4-羟基丁酸酯、3-羟基戊酸酯和中链长3-羟基链烷酸酯单体的聚酯都可以在E.大肠杆菌中通过整合外源或内源途径和/或基因。本文就这方面的研究进展作一综述。此外,导致PHA的生产与不同的单体和高聚合物含量的细胞中的策略进行了讨论。
Polyhydroxyalkanoates (PHAs) that contain varied monomers with different chain lengths/structures were normally synthesized when a structurally-related precursor was present. The biosynthesis of PHAs from unrelated carbon sources in microorganisms including Escherichia coli met many challenges in the past. Recently, with the development of metabolic engineering and synthetic biology, the production of PHAs from unrelated carbon sources obtained a breakthrough. Polyesters containing 2-hydroxypropionate, 3-hydroxypropionate, 4-hydroxybutyrate, 3-hydroxyvalarate, and medium-chain-length 3-hydroxyalkanoate monomers can all be synthesized in E. coli by integrating exogenous or endogenous pathways and/or genes. This review will summarize the progresses in this area. In addition, the strategies that lead to the production of PHAs with varied monomers and high polymer content in the cell are discussed.
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