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一个重新连接的NADPH依赖的氧化转化器,用于测试Komagataella phaffii中的合成代谢途径的氧体细分

Albert Fina¹, Sílvia Àvila-Cabré¹, Enrique Vázquez-Pereira¹

¹Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, Carrer de les Sitges, s/n, 08193 Bellaterra, Catalonia, Spain.

|January 25, 2025

概括

研究人员设计了酵母过氧体,以产生3-酸 (3-HP) 作为记者. 通过特定基因的共同过度表达来增强过氧体内NADPH池,显著提高了3-HP产量,证明了新型的生物传感器用于代谢工程.

科学领域:

合成生物学合成生物学
代谢工程是代谢工程.
酵母生物技术的酵母生物技术

背景情况:

微生物中异质通路的分类为代谢物生产提供了优势.
在特定的细胞区内测量代谢物度,如过氧体,具有挑战性.
3-基酸 (3-HP) 是一种可量化的代谢物,与有价值产品共享前体.

研究的目的:

为*Komagataella phaffii*中进行过氧体工程开发一个报告系统.
用3-HP作为生物传感器来评估过氧体代谢状态.
评估增强氧体内NADPH可用性的策略.

主要方法:

使用 PTS1 标记将马洛尼尔-CoA 减少酶通路向使用 PTS1 标记将 3-HP 生产成 *K. phaffii* 过氧体.
测试使用各种碳来源的3HP生产.
评估共同过度表达*Saccharomyces cerevisiae*基因 (IDP2/IDP3用于NADPH穿,Pos5用于NADH激酶) 对3-HP产量的影响.

主要成果:

在K. phaffii*中成功建立了过氧体3-HP的产生.
对NADPH依赖的氧化还原穿基因 (IDP2/IDP3) 的协同过度表达显著增加了不同基板上的3-HP产量.
过氧体向NADH激酶 (Pos5) 并没有增强3-HP的产生.

结论:

过氧体的3-HP生产作为一个有效的生物传感器来评估过氧体的乙-CoA和NADPH水平.
通过特定的遗传策略来提高过氧体内NADPH的可用性,可以改善代谢物生产.
这种方法有可能在酵母中推进基于过氧体的代谢工程.

关键词:

3-基烯酸是3基烯酸中的一种.科玛格塔贝拉 (Komagataella phaffii) 是一个有趣的植物.它们是NADPH,NADPH.这就是Pichia pastoris.乙烯基-CoAA 的使用.代谢工程是代谢工程.过氧组的过氧组.氧化还原航天飞机的运输.

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