分区直角生物合成,以促进Saccharomyces cerevisiae中的利蒙和氧化单聚胺的产生
Aoqing Ma1, Huili Yu1, Aitao Li1
1State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, #368 Youyi Road, Wuhan 430062, China.
Bioresource technology
|November 20, 2025
概括
机械酵母使用一种新的双隔间策略高效地生产烯和衍生物. 这种方法克服了代谢瓶,实现了可持续化学生物合成的创纪录产量.
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:
- 烯和衍生品是有价值的循环单烯酸,具有多种工业应用.
- 目前的生产方法面临的局限性是由于Saccharomyces cerevisiae中的ERG20酶转移了代谢流.
- 工程酵母为生产这些化合物提供了一个可持续的途径.
研究的目的:
- 开发一种混合细胞质-氧体分离策略,用于S. cerevisiae中正交的单聚类生物合成.
- 为了克服ERG20介导的代谢流的转移,从格兰 pyrophosphate (GPP).
- 为了实现高水平的de novo微生物生产利蒙及其氧化衍生物.
主要方法:
- 实施了一种混合双细胞质-氧体细分策略,使用内酸铁 (NPP) 作为前体.
- 设计了针对细胞质和过氧体的单个菌株,用于生产利蒙.
- 引入了针对利蒙衍生物生物合成的定制P450酶.
主要成果:
- 单独设计的菌株产生了1.5g/L (细胞质) 和1.3g/L (氧体) 的 (+) - 烯.
- 混合菌株在摇瓶中达到2.1g/L,在5L生物反应器中达到15.2g/L的记录.
- 实现了 (+) - 利醇 (4.6 g/L) 和 (+) - 利酸 (0.9 g/L) 的最高生物生产; (+) - 利醇 (104 mg/L) 和 (+) - 利醇 (205 mg/L) 也被合成.
结论:
- 混合细胞质-氧体工程方法对直角生物合成途径非常有效.
- 这一战略显著增强了新型微生物生产的烯及其衍生物.
- 开辟了基于酵母的宝贵GPP衍生的化学物质生物合成的新途径.
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