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在基因组规模上对工业相关成分进行全面查,使用高质量的Corynebacterium glutamicum过度表达基因集合
Jiao Liu1, Xiaojia Zhao2, Haijiao Cheng1
1Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; National Center of Technology Innovation for Synthetic Biology, Tianjin 300308, China.
Trends in biotechnology
|October 25, 2024
概括
研究人员开发了Corynebacterium glutamicum的过度表达基因集合,识别了增强L-氨酸生产和透耐受性的成分. 这种资源有助于创造改进的微生物菌株,用于生物制造氨基酸和生物化学品.
科学领域:
- 微生物学 微生物学
- 合成生物学 合成生物学
- 生物技术是生物技术.
背景情况:
- 有效的微生物菌株对于生物制造至关重要,需要了解与化合物合成,运输和耐受性相关的基因功能.
- 科里尼细菌 (Corynebacterium glutamicum) 是一种用于生产有价值化学品的工业工作马.
研究的目的:
- 构建一个全面的基因过度表达菌株集合,用于Corynebacterium glutamicum.
- 选本系列的基因增强生物制造特征,如透耐受性和氨基酸生产力.
- 识别和描述用于改进微生物细胞工厂的新型组件.
主要方法:
- 构建一个高质量的,可控制的基因过度表达菌株集合,覆盖99.7%的Corynebacterium glutamicum基因.
- 收集的综合查,以确定赋予改善超的耐受性和L-lysine生产力的基因.
- 在Corynebacterium glutamicum和Escherichia coli中对选定的基因进行系统的调查,包括转录因子,DNA修复蛋白和特定的输出者.
主要成果:
- 鉴定了15种可以提高高透性耐受性和L-lysine生产力的成分.
- 发现了与生物制造相关的新型转录因子和DNA修复蛋白.
- 在C. glutamicum和E. coli中具有功能性的高效和特定出口商的表征.
- 开发一种Corynebacterium glutamicum菌株,使用已确定的出口商实现75.1g/l (1.5g/l·h) 的L-氨酸生产记录.
结论:
- 基因过度表达的基因基因尺度集合是基础研究和工业菌株开发的宝贵资源.
- 已识别的成分和出口商可以显著提高氨基酸和其他生物化学品的生产.
- 这项工作为设计更高效的微生物细胞工厂为可持续的生物制造提供了基础.
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