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优化Enterobacter空气原体中的生产,通过破坏复合物I外围碎片和对MAE的过度表达

Ke Jiang¹, Ruoxuan Bai¹, Ting Gao¹

¹Zhejiang Province Key Laboratory of Plant Secondary Metabolism and Regulation, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China.

Microbial cell factories

|July 26, 2023

概括

通过基因改造细菌菌株来增强可持续的微生物生产. 优化代谢途径导致产量增加65%,为化石燃料提供了一个有希望的替代品.

科学领域:

微生物学微生物学
代谢工程是代谢工程.
生物能源是生物能源.

背景情况:

是一种有价值的清洁能源,具有巨大的潜力.
微生物生产为化石燃料提供了一个可持续的替代方案.
基因工程可以优化微生物菌株以提高产量.

研究的目的:

通过基因改造改善微生物系统中的生产.
调查改变复合I活性和代谢途径对产量的影响.
开发一种优化的细菌菌株,以有效地产生生物.

主要方法:

使用 λ-Red 重组用于向基因淘汰 (nuoE, nuoF, nuoG) 和基因过度表达 (maeA).
修改了复合物I活性,并促进了酸转化为酸的转化.
分析了NADH和酸含量的变化以及代谢途径流动.

主要成果:

与野生类型相比,优化菌株IAM1183-EFG/M的气产量增加了65%.
增加了257%的酸路径流量和13%的NADH路径流量.
在44个小时内展示了4.76升的规模化气生产,提高了18%.

结论:

多个基因的组合基因改造显著提高了微生物的生产.
优化代谢途径,特别是那些涉及酸和NADH的代谢途径,对于增加产量至关重要.
这项研究为推进可持续生物技术提供了一个新的战略.

关键词:

黑暗发酵黑暗发酵进入空气的空气致虫菌.的生产生产的生产.在 NADH 脱水酶.在NADH/NAD+池中.

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