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通过BC₃/C₃N异构纳米孔自发转移的分子机制:一个分子动力学研究研究

Xiao Jia^1,2, Yuanyuan Qu², Yong-Qiang Li²

¹College of Physics and Electronic Science, Institute of Solid State Physics, Shanxi Province Key Laboratory of Microstructure Electromagnetic Functional Materials, Shanxi Datong University, Datong 037009, China.

The journal of physical chemistry. B

|January 13, 2026

概括

由于不同的表面吸引力,会自发地穿过一个新的纳米孔. 芳香残留物暂时阻碍了这种运动,为纳米孔应用提供了对生物分子运输的见解.

科学领域:

材料科学材料科学材料科学
生物物理学的生物物理.
计算化学计算化学

背景情况:

固态纳米孔 (SSN) 测序为遗传和蛋白质组应用提供了具有成本效益的,长时间读取的分析.
传统的SSN方法与非均电荷的蛋白质作斗争,限制了单分子蛋白质测序.
研究替代转位机制对于推进纳米孔技术至关重要.

研究的目的:

在没有外力的情况下探索跨BC₃/C₃N范德瓦尔斯 (vdW) 异构纳米孔的转位.
为了阐明在异构结构接口上控制体运动的分子相互作用.
建立一个理解异构结构介导生物分子运输的框架.

主要方法:

利用分子动力学 (MD) 模拟来模拟的行为.
在BC₃/C₃N vdW异构中分析了转位动态.
研究了特定氨基酸残留物 (例如,氨酸) 的作用及其与纳米孔表面的相互作用.

主要成果:

由于与C.N.有更强的结合亲和力,从BC₃表面自发转移到C₃N表面.
芳香氨酸 (Phe) 残留物由于与纳米表面的强 π-π 相互作用导致了暂时的转移延迟.
识别出不对称的吸附能量是自发的,定向转运的驱动力.

结论:

在BC₃/C₃N异构结构促进自发的,定向转位.
了解残留物-表面相互作用,如 π-π 堆叠,是控制纳米孔中的生物分子运动的关键.
这项研究为设计未来基于纳米孔的生物分子操纵系统提供了基本的机械见解.

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