使用乙酸盐作为代谢工程大肠杆菌中碳源的利蒙的生物合成
Weiying Zhao1, Yanzhe Shang2, Meiyu Pan1
1Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Key Laboratory of Bio-based Material Engineering of China National Light Industry Council, School of Biotechnology, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
Journal of agricultural and food chemistry
|March 11, 2026
概括
这项研究设计了一个生物合成平台,用于生产烯 (一种有价值的单烯),使用乙酸作为唯一的碳来源. 研究人员实现了创纪录的450.72 mg/L标位,证明了乙酸盐的含量.
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:
- 利蒙是一种高价值的单类化合物,在食品,制药和香料中具有应用.
- 传统的烯生产面临着局限性,需要替代的可持续方法.
- 乙提供了一种可持续的非食品碳来源,可以从工业废物和二氧化碳减排中获得.
研究的目的:
- 开发一个强大的生物合成平台,以利用乙酸作为唯一的碳来源生产利蒙.
- 优化微生物宿主和发酵过程,以提高利蒙产量.
- 建立从非食品原料中生产高价值类的框架.
主要方法:
- 从酸盐中构建一种异质合成途径,用于从酸盐中合成利蒙.
- 代谢工程策略包括引入突变酶 (EfMVAS^A110G),促进剂工程和基质替代.
- 通过NADPH再生,途径淘汰和发酵参数调节进行宿主优化.
- 全细胞生物催化剂的最终生产标位的实现.
主要成果:
- 从乙酸盐中初始的利蒙生产达到0.13 mg/L.
- 增强的催化效率和途径优化将标位提高到49.24 mg/L.
- 主体和发酵的优化进一步提高了产量,达到167.45 mg/L.
- 使用从乙酸盐的全细胞生物催化剂实现了创纪录的450.72 mg/L 利蒙标位.
结论:
- 开发了报告中最高的乙酸基利蒙生产标位.
- 建立了一个可行的框架,用于从非食品原料,如酸盐中合成高价值类.
- 证明了乙酸作为先进生物生产的可持续和高效碳来源的潜力.
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