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低温促进了酵母酵母中类的产生和流出

Lei Qin¹, Dongshi Ma², Guangyuan Lin¹

¹Center for Synthetic and Systems Biology, Tsinghua University, Beijing, China; Department of Chemical Engineering, Tsinghua University, Beijing, China; Key Lab for Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, China.

Bioresource technology

|January 26, 2024

概括

降低酵母发酵温度大大提高了像甘氨酸 (GA) 这样有价值的类化合物的产生. 这种优化策略增强了细胞平衡,并改善了酶功能,从而增加了微生物的生产.

科学领域:

生物技术和合成生物学
代谢工程是代谢工程.
微生物发酵微生物发酵

背景情况:

优化微生物细胞工厂对于高效的全球生产至关重要.
发酵环境的操纵为提高产品产量提供了一种有效的策略.
酵母中的化物生产是生物技术应用的一个关键领域.

研究的目的:

为了研究低发酵温度对酵母烯酸产生的影响.
为了确定基底的分子机制温度诱导的改进在糖酸 (GA) 合成和流量.
探索增强微生物系统中有价值的类物质的产生策略.

主要方法:

酵母在不同的温度下进行比较发酵 (例如,22°C与30°C).
奥米克分析 (转录组,蛋白质组) 来识别基因和蛋白质表达的变化.
酶表征和替代 (Mvd1) 以评估对代谢途径的影响.
细胞成分的分析,包括脂和脂肪酸不和.

主要成果:

与较高温度 (30°C) 相比,较低的发酵温度 (22°C) 显著增加了GA生产的5.5倍.
在较低的温度下观察到参与细胞平衡的基因的升调,与增强的GA生产相关.
将热不稳定的酶Mvd1替换为耐热的异酶进一步促进了GA的产生.
较低的温度改变了细胞膜的特性,增加了脂不和,并可能影响GA流动.

结论:

降低发酵温度是一个可行的策略,以优化基于酵母的烯酸生产.
细胞平衡机制和特定酶的热稳定性是提高微生物工厂效率的关键目标.
这项研究提供了关于改善发酵过程以增加类产量的见解.

关键词:

葡萄糖氨基酸是什么? 葡萄糖氨基酸是什么?低温发酵低温发酵的方法蛋白质组学是指蛋白质组学.这种植物是Saccharomyces cerevisiae.文字转录学 (Transcriptomics) 是一个学科.

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