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工程乙-CoA代谢,通过调节膜功能来增强酵母的抗压能力
Dingkang Wang1, Zixi He1, Huan Xia1
1College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China.
Food microbiology
|August 11, 2023
概括
工程酵母的乙-CoA代谢增强了应激耐受性和发酵. 补充乙-CoA和表达ACSS基因改善了酵母膜功能和在恶劣条件下生存.
科学领域:
- 微生物学和生物技术
- 代谢工程是代谢工程.
- 酵母发酵 酵母发酵的方法
背景情况:
- Zygosaccharomyces rouxii表现出强大的发酵和透应激耐受性.
- 乙-CoA是酵母中心碳代谢中的关键中间体.
- 了解乙-CoA的作用对于改善酵母工业应用至关重要.
研究的目的:
- 研究工程乙-CoA代谢对酵母膜功能和应激耐受性的影响.
- 为了评估外源性乙-CoA补充剂和ACSS基因表达的影响.
- 为了提高酵母在具有挑战性的发酵环境中的性能.
主要方法:
- 在Zygosaccharomyces rouxii.上对乙-CoA进行外源补充.
- 定量PCR (Q-PCR) 用于分析基因表达 (ACSS).
- 在Saccharomyces cerevisiae中Z. rouxiiACSS基因的异质表达.
主要成果:
- 乙-CoA补充剂在盐应激下改善了Z. rouxii生物质和不和脂肪酸合成.
- 该ACSS基因在对乙-CoA的反应中显示出显著的表达.
- 再组合的Saccharomyces cerevisiae表现出对多种压力 (盐,酸,热,冷) 的增强耐受性,改善了膜完整性和流动性.
结论:
- 工程乙-CoA代谢是一种可行的策略,可以提高酵母的耐压力.
- 来自Z. rouxii的ACSS基因在表达在其他酵母物种时,可以提高抗压能力.
- 这项研究提供了一种方法,可以在苛刻的工业环境中提高酵母发酵效率.
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