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通过膜蛋白TMEM120A和TMEM120B直接检测CoA-SH和ATP的单分子

Changjian Zhao^1,2, Mutian Chen^1,2, Xiaofeng Liu³

¹Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Clinical Laboratory Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041, China. geng.jia@scu.edu.cn.

|March 6, 2024

概括

研究人员使用TMEM120A和TMEM120B膜蛋白开发了新的单分子生物传感器. 这些传感器可以通过分析离子电流变化来检测协酶A (COA-SH) 和ATP,为生物启发的传感器开发铺平了道路.

科学领域:

生物物理学的生物物理.
生物传感器技术技术
分子生物学分子生物学

背景情况:

膜蛋白对于生物传感器的发展至关重要.
TMEM120A蛋白与疼痛和脂质代谢有关,可以运输离子并结合辅酶A (COA-SH).

研究的目的:

研究TMEM120A和TMEM120B的离子运输特性.
开发用于检测COA-SH和类似分子的单分子传感器.

主要方法:

在人造脂质双层上进行单通道记录.
使用TMEM120A和TMEM120B蛋白质进行离子运输研究.
开发基于蛋白质-配体相互作用和离子电流分析的生物传感器.

主要成果:

TMEM120A和TMEM120B蛋白质融合到脂质双层中,并导出稳定的离子电流.
无论是COA-SH还是ATP都可逆地与TMEM120A和TMEM120B结合,导致暂时的离子电流阻塞.
通过分析当前阻断信号,可以实现COA-SH和ATP的单分子检测和识别.

结论:

TMEM120A和TMEM120B作为COA-SH和ATP的有效单分子生物传感器.
这项研究为开发生物启发的小分子传感器提供了基础.
证明了膜蛋白在电气生物传感应用中的潜力.

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