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De novo biosynthesis of liquiritin in Saccharomyces cerevisiae.
Acta Pharmaceutica Sinica B ( IF 14.7 ) Pub Date : 2019-07-23 , DOI: 10.1016/j.apsb.2019.07.005
Yan Yin 1, 2 , Yanpeng Li 1, 3 , Dan Jiang 1 , Xianan Zhang 2 , Wei Gao 2, 4 , Chunsheng Liu 1
Affiliation  

Liquiritigenin (LG), isoliquiritigenin (Iso-LG), together with their respective glycoside derivatives liquiritin (LN) and isoliquiritin (Iso-LN), are the main active flavonoids of Glycyrrhiza uralensis, which is arguably the most widely used medicinal plant with enormous demand on the market, including Chinese medicine prescriptions, preparations, health care products and even food. Pharmacological studies have shown that these ingredients have broad medicinal value, including anti-cancer and anti-inflammatory effects. Although the biosynthetic pathway of glycyrrhizin, a triterpenoid component from G. uralensis, has been fully analyzed, little attention has been paid to the biosynthesis of the flavonoids of this plant. To obtain the enzyme-coding genes responsible for the biosynthesis of LN, analysis and screening were carried out by combining genome and comparative transcriptome database searches of G. uralensis and homologous genes of known flavonoid biosynthesis pathways. The catalytic functions of candidate genes were determined by in vitro or in vivo characterization. This work characterized the complete biosynthetic pathway of LN and achieved the de novo biosynthesis of liquiritin in Saccharomyces cerevisiae using endogenous yeast metabolites as precursors and cofactors for the first time, which provides a possibility for the economical and sustainable production and application of G. uralensis flavonoids through synthetic biology.

中文翻译:

从头生物合成啤酒酵母中的liquiritin。

甘草甜素(LG),异甘草素(Iso-LG)以及它们各自的糖苷衍生物Liquiritin(LN)和异草皮素(Iso-LN)是甘草的主要活性类黄酮,可以说是最广泛使用的药用植物,具有巨大的药用植物。市场需求包括中药处方,制剂,保健品甚至食品。药理研究表明,这些成分具有广泛的医学价值,包括抗癌和抗炎作用。尽管已经对甘​​草甜菜碱(一种来自甘草(G. uralensis)的三萜类成分)的生物合成途径进行了全面分析,但对这种植物类黄酮的生物合成却很少关注。为了获得负责LN生物合成的酶编码基因,分析和筛选是通过结合基因组和比较转录组数据库搜索甘草和已知类黄酮生物合成途径的同源基因而进行的。通过体外或体内表征确定候选基因的催化功能。这项工作首次表征了LN的完整生物合成途径,并首次使用内源酵母代谢物作为前体和辅因子从头完成了酿酒酵母中从头生物合成,这为经济,可持续地生产和应用G. uralensis黄酮类化合物提供了可能性。通过合成生物学。通过体外或体内表征确定候选基因的催化功能。这项工作首次表征了LN的完整生物合成途径,并首次使用内源性酵母代谢物作为前体和辅因子从头完成了酿酒酵母中白蛋白的从头生物合成,这为经济,可持续地生产和应用G. uralensis黄酮类化合物提供了可能性。通过合成生物学。通过体外或体内表征确定候选基因的催化功能。这项工作首次表征了LN的完整生物合成途径,并首次使用内源性酵母代谢物作为前体和辅因子从头完成了酿酒酵母中白蛋白的从头生物合成,这为经济,可持续地生产和应用G. uralensis黄酮类化合物提供了可能性。通过合成生物学。
更新日期:2020-04-20
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