监管转录因子 (CooA) 驱动的一氧化碳部分压力传感全细胞生物传感器
Byeongchan Kang1, Hyeryeong Lee1,2, Soyoung Oh1
1School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
Heliyon
|July 6, 2023
概括
研究人员开发了一种全细胞生物传感器,使用CooA蛋白来检测和量化一氧化碳 (CO). 这种生物传感器可以进行色度检测和二氧化碳水平的定量分析,为环境监测提供了一个新的工具.
科学领域:
- 合成生物学 合成生物学
- 生物技术是生物技术.
- 环境科学 环境科学
背景情况:
- 一氧化碳 (CO) 是一种有毒气体,需要敏感的检测方法.
- 现有的CO检测方法在灵敏度或适用性方面可能存在局限性.
- 全细胞生物传感器为各种分析物的生物检测提供了一个有希望的平台.
研究的目的:
- 设计和制造一种全细胞生物传感器,用于检测和量化一氧化碳 (CO).
- 为了利用CO传感转录因子CooA进行CO检测.
- 为了使CO度的色度和定量分析.
主要方法:
- 设计了一种*Escherichia coli*菌株,具有对CO有反应的促进体系统.
- 整合了CooA转录因子,以调节GUS记者基因的表达.
- 在无氧条件下使用惰性气体 (Ar) 验证了生物传感器性能.
- 通过GUS活动测量和动力分析评估了CO检测和量化.
主要成果:
- 开发的pBRCO生物传感器成功地检测到头部空间中的CO.
- 特定于GUS的活性证明了CO部分压力 (R2 = 0.98) 的迈凯利斯-门动力学.
- 观察到高达30.39kPa的GUS活动和CO部分压力之间的线性相关性 (R2 = 0.98),使定量分析成为可能.
结论:
- 一个功能性的全细胞生物传感器,用于一氧化碳 (CO) 检测和量化,已成功构建.
- 生物传感器对二氧化碳表现出敏感和定量反应,适合各种应用.
- 这种工程生物传感器为环境监测和生物 CO 传感提供了宝贵的工具.
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