用Corynebacterium glutamicum进行代谢工程,以高效地生产乙
Zhi Ma1, Renjie Chang1, Linjiang Zhu1
1College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
ACS synthetic biology
|April 12, 2024
概括
通过发酵,工程*Corynebacterium glutamicum*通过发酵实现了创纪录的115.87g/L的生殖素标位. 这一突破增强了在低盐条件下用于医疗,化品和生物技术应用的ectoine生产.
科学领域:
- 生物技术和合成生物学
- 微生物工程 微生物工程
- 生物化学 生物化学
背景情况:
- 乙是保护细胞和生物分子的重要兼容溶液,在医学,化品和生物技术中具有广泛的应用.
- 微生物发酵是大规模生产ectoine的关键方法,持续努力优化产量和成本效益.
研究的目的:
- 为了改造*Corynebacterium glutamicum*以提高生殖素的产量.
- 为了在低盐环境中实现高度的生殖素生产.
主要方法:
- 在C. glutamicum*中,来自Halomonas elongata的*ectBAC*操作子的异质表达.
- 基因修改包括引入用于T7促进体表达的*de3*基因,消除*lysE*基因和*lysC*S301Y突变以减少氨酸反抑制.
- 优化料批发发酵条件.
主要成果:
- 改造的Ect10菌株实现了前所未有的115.87g/L的ectoine标位.
- 这代表了迄今为止C. glutamicum报告的最高的ectoine生产水平.
- 在低盐发酵环境中证明了高效的生殖素生产.
结论:
- 开发的基因工程策略显著提高了*C. glutamicum*中的ectoine产量.
- 在低盐介质中的高度生产提供了一个更可持续和更具成本效益的方法来制造ectoine.
- 这种工程菌株有望为各种应用提供工业规模的ectoine供应.
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