(R) - 胺酸的生产通过工程化米菌的生产
Ryosuke Mitsui1, Akihiko Kondo1,2, Tomokazu Shirai1
1Center for Sustainable Resource Science, RIKEN, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.
Metabolic engineering communications
|September 9, 2024
概括
这项研究设计了Saccharomyces cerevisiae,通过优化乙-CoA的可用性和出口来增强 (R) - 酸盐的生产. 由此产生的酵母菌株取得了创纪录的产量,证明了高效生物制造的潜力.
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:
- 细菌菌表现出对有毒化合物的高耐受性,使其适合有效的生物生产.
- 在酵母中细胞内分离限制了用于 (R) - 酸合成的细胞溶乙-CoA的可用性.
- (R) - 酸是甲基甲酸盐的有价值的前体,也是高酒精的代谢中间体.
研究的目的:
- 为了设计Saccharomyces cerevisiae以增加细胞酸乙-CoA的可用性.
- 建立一个高效的生物生产系统 (R) - 酸使用重组酵母.
- 克服酵母新陈代谢的局限性,以提高有价值化合物的生产.
主要方法:
- 在S. cerevisiae中抑制了乙-CoA和酸盐的线粒体运输.
- 构建了一条异质通路,以增加细胞酸乙-CoA供应.
- 为 (R) - 甲酸出口引入了一种异质二碳酸盐运输体.
主要成果:
- 经过工程改造的S. cerevisiae菌株显示改善了 (R) - 酸盐的生产.
- 综合的代谢工程策略导致最终的菌株产生了16.5mM (R) - 酸.
- 这项研究报告了由重组的S. cerevisiae首次成功生产 (R) - citramlate.
结论:
- 细菌的代谢工程可以显著提高 (R) - 酸的生产.
- 优化乙-CoA代谢和出口对于高效的酵母生物制造至关重要.
- 开发的菌株代表了 (R) - 酸生物生产的重大进步.
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