系统工程是为了增强Rhodobacter sphaeroides中的瓦伦生产
Zhizhen Li1, Wenhao Li1, Xinyu Gao1
1State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Fujian, 361102, China.
Bioresources and bioprocessing
|September 19, 2025
概括
从农业废物中微生物合成 (+) - 烯提供了一个可持续的替代方案. 工程 Rhodobacter sphaeroides 实现了高价位,对玉米茎废物进行了价值化.
科学领域:
- 合成生物学 合成生物学
- 代谢工程是代谢工程.
- 生物技术是生物技术.
背景情况:
- 传统的 (+) - 烯从植物中提取是不可持续的.
- 农业废物利用对于循环经济至关重要.
研究的目的:
- 为高效的 (+) - 烯微生物合成而设计Rhodobacter sphaeroides.
- 利用农业废物,特别是玉米茎,作为可持续的基板.
主要方法:
- 这是Callitropsis nootkatensis瓦伦合成酶 (CnVS) 的异质表达.
- 代谢途径工程包括基因淘汰和促进器优化.
- 梅瓦酸路径的基因组整合.
- 使用预处理的玉米茎水解剂作为碳源.
主要成果:
- 从葡萄糖中获得了34.21 mg/L的瓦伦标位.
- 使用定数感应促进剂,提升标位至80.75 mg/L.
- 通过基因组整合达到120.53mg/L的最大标位.
- 使用玉米茎水解剂生产了100.51 mg/L的瓦伦.
结论:
- 工程化R. sphaeroides为 (+) - 烯生产提供了一个可行的微生物平台.
- 这种方法提供了一种可持续的方法来利用农业废物.
- 证明了从生物质中生产高价值化合物的工业规模生产潜力.
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