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高通量检测蓝藻菌I型鲁比斯科组件的检测

Jackson W Wysocki¹, ByungUk Lee¹, Tina Wang¹

¹Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.

ACS synthetic biology

|December 22, 2025

概括

我们开发了一种生物传感器来测量大肠杆菌中的鲁比斯科组合,帮助设计这种关键的光合作用酶,以提高作物产量. 这个工具揭示了Rubisco突变如何影响其组装过程.

科学领域:

生物化学生物化学
分子生物学分子生物学
植物科学植物科学

背景情况:

鲁比斯科对于光合作用至关重要,催化了二氧化碳的固定.
通过蛋白质工程改进鲁比斯科可以提高作物产量.
鲁比斯科组件复杂且对序列改变敏感,阻碍了工程工作.

研究的目的:

设计一种基因编码的生物传感器,用于检测E. coli中的I型鲁比斯科组件.
使用生物传感器分析Rubisco序列突变对全酶生物发生的影响.
评估Rubisco在一个大型突变库中的组装,以了解进化约束.

主要方法:

在大肠杆菌中设计一个Rubisco组装生物传感器.
使用生物传感器检测蓝色细菌Rubisco Ortholog 组件.
适应生物传感器以菌体辅助的非连续选择进行大规模突变库选.

主要成果:

生物传感器成功检测到蓝菌鲁比斯科和伴侣稳定中间体的RbcS依赖组合.
生物传感器发现了由RbcL序列突变引起的组装差异.
对约7500个成员的RbcL突变库的分析预测,超过90%的突变会对Rubisco组件产生负面影响.

结论:

鲁比斯科生物发生是其自然进化和蛋白质工程的重要限制.
开发的生物传感器是Rubisco组装和工程的高通量分析的宝贵工具.
了解Rubisco组装对于改善光合作用和作物生产率的努力至关重要.

关键词:

陪伴者-依赖的组件组合基因编码的生物传感器蛋白质工程的限制蛋白质工程的限制在RbcL/RbcS组件组合中.鲁比斯科生物生成

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