确定驱动Lactiplantibacillus Plantarum中Redox媒介活动的关键特性
Benjamin T Blackburn1, Robyn A C Alba2, Vladimir O Porokhin3
1Department of Chemistry, Virginia Tech, Blacksburg, Virginia, USA.
Angewandte Chemie (International ed. in English)
|February 28, 2025
概括
乳植物菌植物 (Lactiplantibacillus plantarum) 在细胞外电子转移 (EET) 中使用子介质. 研究人员开发了40个介质,发现极性和结合能量对于高效的EET至关重要,其中一个氨基介质对生物电子传感具有特殊的稳定性.
科学领域:
- 微生物学 微生物学
- 生物化学 生物化学
- 生物电化学 生物电化学
背景情况:
- 乳植物菌植物体使用介质进行细胞外电子转移 (EET).
- 这个过程依赖于II型NADH脱酶 (Ndh2).
- 介质结构对生物电化学系统 (BES) 的当前输出有重大影响.
研究的目的:
- 研究基于子的ETE介质的结构-活性关系.
- 确定控制L. plantarum中Ndh2依赖EET的关键物理化学性质.
- 为生物电子传感应用开发稳定的介质.
主要方法:
- 组建了一个由40种不同的基EET介质组成的库.
- 分析了介质特性,包括极性,还原潜力和预测的结合能量 (ΔG).
- 使用铁 (III) 纳米粒子还原试验和与L. plantarum的BES评估了EET活性.
主要成果:
- EET活动与介质极性和ΔGcomp强烈相关.
- 在BES中,五个调解器证明了Ndh2依赖的电流生成.
- 一种含氨酸的介质在长达5天的时间内显示出高度稳定的电流输出.
结论:
- 像极性和结合能等物理化学性质对于Ndh2介导的EET至关重要.
- 开发了具有可调节EET特性的新型子介质.
- 确定了一种稳定的含氨酸媒介,适用于先进的生物电子传感.
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