工程Corynebacterium glutamicum通过β-氨酸通路从葡萄糖中有效生产3-基酸
Xiaodi Wang1,2, Junyuan Hou1,2, Jieyao Cui1,2
1Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Synthetic and systems biotechnology
|July 15, 2024
概括
研究人员设计了Corynebacterium glutamicum以使用β-氨酸通路从葡萄糖中产生3-基酸 (3-HP). 优化的菌株达到创纪录的47.54g/L标位,证明了这种有价值的化学物质的高效生物合成.
科学领域:
- 生物技术是生物技术.
- 代谢工程是代谢工程.
- 工业微生物学 工业微生物学
背景情况:
- 3-基酸 (3-HP) 是一种价值高的化学物质,具有多种工业应用.
- β-氨酸途径为从葡萄糖中生产3-HP提供了高的理论产量.
研究的目的:
- 在Corynebacterium glutamicum中设计和优化β-氨酸生物合成途径.
- 用一种代谢工程菌株从葡萄糖中增强3-HP的产生.
主要方法:
- 在Corynebacterium glutamicum中引入和优化β-氨酸通路.
- 代谢工程策略集中在前体供应调节上.
- 在5L发酵器中进行料批发发酵.
主要成果:
- 一种工程菌株,CgP36,被开发用于高效的3HP合成.
- 这种菌株从葡萄糖中产生了47.54g/L的3-HP.
- 达到0.295g/g葡萄糖的高产量,代表了该途径报告的最高标位.
结论:
- 改造的Corynebacterium glutamicum菌株通过β-氨酸通路有效地产生3-HP.
- 这项研究为使用这种生物合成途径从葡萄糖中生产3-HP树立了新的基准.
- 这些发现支持微生物发酵在可持续生产有价值化学品方面的潜力.
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