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对界面静电互补性的可视化揭示了SARS-CoV-2 RBD-hACE2相互作用的进化变化.
Yosuke Muroya1, Hiroki Ozono1, Takeshi Ishikawa1
1Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, Kagoshima 890-0065, Japan. ishi@cb.kagoshima-u.ac.jp.
Physical chemistry chemical physics : PCCP
|December 15, 2025
概括
了解SARS-CoV-2尖端蛋白的受体结合域 (RBD) 中的突变是关键. 一种名为VIINEC的新方法可视化了RBD-hACE2相互作用的静电变化,揭示了病毒进化过程中人类ACE2蛋白的适应机制.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 生物化学 生物化学
背景情况:
- SARS-CoV-2尖端蛋白的受体结合域 (RBD) 与人类血管酶转化酶2 (hACE2) 相互作用,这是病毒感染的关键步骤.
- 在RBD中的氨基酸突变驱动病毒进化,并可以改变这一关键的蛋白质-蛋白质相互作用 (PPI).
研究的目的:
- 综合分析SARS-CoV-2 RBD中氨基酸突变对RBD-hACE2 PPI的影响.
- 研究病毒进化过程中RBD-hACE2接口的静电互补性的适应性变化.
主要方法:
- 使用了一种新的PPI分析方法,视觉化界面静电互补性 (VIINEC).
- 应用了VIINEC来研究15种SARS-CoV-2变种中的RBD-hACE2复合体.
- 在蛋白质-蛋白质界面上可视化和分析静电电位 (ESP).
主要成果:
- 在不同SARS-CoV-2变种中观察到RBD的静电潜力 (ESP) 的显著变化.
- 证明了HACE2蛋白的ESP在响应RBD突变时发生了显著的变化,尽管它本身没有突变.
- 发现HaaCE2与不断演变的RBD保持了高的静电互补性.
- 归因于HACE2中的自适应ESP变化是由于四个充电残留的构造变化.
结论:
- 通过可视化静电互补性,VIINEC提供了一种直观的方法来理解突变如何影响PPI.
- SARS-CoV-2 变种在 RBD-hACE2 接口中表现出适应性变化,其中 hACE2 动态调整其静电形状.
- 这些发现凸显了病毒及其宿主受体之间的复杂的共同进化动态.
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