在Yarrowia lipolytica中为有效的β-farnesene生物生产提供酶和途径的组合工程
Hongyang Chen1, Liqiu Su2,3, Zhen Yao2,3
1Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei University of Technology, Wuhan, 430068, China.
Synthetic and systems biotechnology
|December 1, 2025
概括
研究人员通过微生物生物合成增强了β-法纳的产生. 在Yarrowia lipolytica中,β-farnesene合成酶和途径工程的定向演化实现了创纪录的45.69g/L标位.
科学领域:
- 生物技术是生物技术.
- 代谢工程是代谢工程.
- 合成生物学 合成生物学
背景情况:
- β-法内是一种有价值的基烯,具有多种应用.
- 微生物生物合成为β-法涅生产提供了一个可持续的途径.
- 优化生产效率需要理解和解决速度限制步骤.
研究的目的:
- 通过酶工程和代谢途径优化来增强β-法纳的生产.
- 阐明改善β-法纳合成酶的催化效率的结构基础.
- 建立一个强大的微生物平台,用于高度的类生物合成.
主要方法:
- 使用定向进化来设计β-法纳合成酶 (AaFS).
- 进行了结构阐释,以了解突变对酶活性的影响.
- 在Yarrowia lipolytica中应用了代谢工程策略,包括途径放大和前体增强.
- 进行了摇瓶和生物反应器发酵,以评估β-法纳的生产.
主要成果:
- 一种最佳的AaFS变体 (AaFST196A/M356T/E380G) 显示β-法内标位增加了2.29倍.
- 发现远端突变可以全性调节催化核,增强FPP转化.
- 工程Y. lipolytica菌株FS18在摇瓶培养中达到3.41g/L.
- 在5升生物反应器中进行大规模发酵,取得了创纪录的45.69g/Lβ-法内标位.
结论:
- 酶工程和全面的途径优化对于高水平的β-法纳生产是有效的.
- 获得了对合成酶工程的机械洞察力.
- 雅罗维亚脂质菌 (Yarrowia lipolytica) 作为工业类生物合成的强大宿主.
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