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在Yarrowia lipolytica中设计西洛异构酶和减少酶通路,以有效生产脂质

Isabel De La Torre¹, Miguel G Acedos^1,2, Juan J Cestero¹

¹Department of Biotechnology, Centro de Investigaciones Biológicas Margarita Salas. Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain.

Microbial biotechnology

|March 15, 2025

概括

工程化Yarrowia lipolytica有效地从树脂中产生脂质. 氧化糖还原酶通路菌株实现了最高的脂质产量 (0.13 g/g氧化糖),证明了其可持续生物处理的潜力.

科学领域:

生物技术是生物技术.
代谢工程是代谢工程.
酵母发酵酵母发酵的方法

背景情况:

雅罗维亚脂质菌不能自然地代谢西洛斯以产生脂质.
工程异构的西洛代谢途径对于利用纤维素酸残留物至关重要.

研究的目的:

为了比较Y. lipolytica中西洛斯减少酶和西洛斯异构酶通路的代谢效率,用于脂质生产.
为了确定最佳的途径,以提高脂质产量,使用西洛斯作为唯一的碳来源.

主要方法:

三种重组Y. lipolytica菌株的发展:克西洛斯减少酶路径,克西洛斯异构酶路径和组合路径.
在不同尺度上测试和比较西洛斯消耗和脂质生产效率.
在选择性化介质中直接分离菌株.

主要成果:

氧化糖还原酶通路菌株实现了最高的脂质产量 (12.8 g/L,生物质干重的43%) 和0.13 g脂质/g氧化糖的产量.
克西洛酶异构酶途径在氧气限制条件下表现更好,但总产量较低.
结合这两种途径的效果不如单独使用还原酶途径.

结论:

在Y. lipolytica中设计的氧化糖还原酶通路对于从氧化糖中产生脂质非常有效.
这种方法提供了一个有前途的策略,用于可持续的脂质生物合成使用基纤维素生物质.
进一步优化可能会增强脂质积累和纤维素利用效率.

关键词:

雅罗维亚 (Yarrowia lipolytica) 是一个高脂的植物.纤维素素酸是什么纤维素酸脂质脂质脂质是一种一个Xylose,一个Xylose.

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