Production of salidroside in metabolically engineered Escherichia coli.

Production of salidroside in metabolically engineered Escherichia coli.
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代谢工程大肠杆菌中红景天苷的生产

DOI:
10.1038/srep06640
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发表时间:
2014-10-17
期刊:
影响因子:
4.6
通讯作者:
Ma Y
Ma Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Bai Y;Bi H;Zhuang Y;Liu C;Cai T;Liu X;Zhang X;Liu T;Ma Y

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相似文献

红景天苷(Salidroside,1)是红景天(Rhodiola,又称“西藏人参”)中最重要的生物活性成分,具有多种适应性作用。由于植物提取和化学合成的效率低下,目前红景天苷(1)的供应有限。在此,我们实现了在微生物中从葡萄糖生物合成红景天苷(1)的前所未有的结果。首先,在大肠杆菌中,丙酮酸脱羧酶ARO 10和内源性醇脱氢酶被募集以将L-酪氨酸途径的中间体4-羟基苯丙酮酸(2)转化为酪醇(3)。随后,通过过表达途径基因以及通过消除竞争途径和反馈抑制来改善酪醇生产。最后,通过将红景天衍生的糖基转移酶UGT 73 B6导入上述重组菌株,以56.9 mg/L的滴度生产红景天苷(1)。 有趣的是,红景天衍生的糖基转移酶UGT 73 B6也催化葡萄糖连接到酪醇的苯酚位置(3)以形成淫羊藿苷D2(4),这在任何先前的文献中都没有报道。
Salidroside (1) is the most important bioactive component of Rhodiola (also called as “Tibetan Ginseng”), which is a valuable medicinal herb exhibiting several adaptogenic properties. Due to the inefficiency of plant extraction and chemical synthesis, the supply of salidroside (1) is currently limited. Herein, we achieved unprecedented biosynthesis of salidroside (1) from glucose in a microorganism. First, the pyruvate decarboxylase ARO10 and endogenous alcohol dehydrogenases were recruited to convert 4-hydroxyphenylpyruvate (2), an intermediate of L-tyrosine pathway, to tyrosol (3) in Escherichia coli. Subsequently, tyrosol production was improved by overexpressing the pathway genes, and by eliminating competing pathways and feedback inhibition. Finally, by introducing Rhodiola-derived glycosyltransferase UGT73B6 into the above-mentioned recombinant strain, salidroside (1) was produced with a titer of 56.9 mg/L. Interestingly, the Rhodiola-derived glycosyltransferase, UGT73B6, also catalyzed the attachment of glucose to the phenol position of tyrosol (3) to form icariside D2 (4), which was not reported in any previous literatures.
DOI: 10.1371/journal.pone.0075459
发表时间: 2013
期刊: PloS one
影响因子: 3.7
作者:
Lan X;Chang K;Zeng L;Liu X;Qiu F;Zheng W;Quan H;Liao Z;Chen M;Huang W;Liu W;Wang Q
通讯作者: Wang Q
DOI: 10.1211/jpp.62.04.0017
发表时间: 2010-04-01
影响因子: 3.3
作者:
Ouyang, Jing-Feng;Lou, Jianguo;Hong, Dong-Sheng
通讯作者: Hong, Dong-Sheng
DOI: 10.1073/pnas.120163297
发表时间: 2000-06-06
影响因子: 11.1
作者:
Datsenko, KA;Wanner, BL
通讯作者: Wanner, BL