脑性阿尔法病毒对受体参与的可塑性结构基础
Saravanan Raju1, Sathvik Palakurty2, Alan Sariol3
1Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
Cell
|April 5, 2025
概括
了解西马脑炎病毒 (WEEV) 如何使用VLDLR和PCDH10等不同的入口受体是控制其传播的关键. 这项研究揭示了允许WEEV适应和感染的特定结合点,提供了新的保护策略.
科学领域:
- 病毒学
- 结构生物学
- 病毒进入的分子机制
背景情况:
- 病毒适应和出现受到受体使用的影响,但结构基础尚不清楚.
- 西方马脑炎病毒 (WEEV) 与非常低密度脂蛋白受体 (VLDLR) 和原素10 (PCDH10) 的接触有所变化.
研究的目的:
- 阐明WEEV与VLDLR和PCDH的不同参与的结构机制.
- 确定负责受体结合的关键病毒决定因素,并探索它们在病毒适应中的作用.
主要方法:
- 结构研究 (例如,X射线结晶学) 来解决WEEV受体复合体.
- 用于评估受体结合和病毒感染性的功能测试.
- 进化分析以指导对策的开发.
主要成果:
- 在E1融合循环附近,WEEV对脂蛋白A类 (LA) 域具有保留的结合点.
- 在E2中需要一个额外的,可变的结合点,受单核酸替代的影响.
- PCDH10结合涉及E1融合环附近的相互作用,与LA域结合点重叠.
结论:
- 病毒可以利用共享和不同的决定因素来吸引多个入口受体,从而影响热带性和毒性.
- 一种由进化衍生出来的PCDH10诱在体内显示出对各种WEEV菌株的保护,突出显示出一种潜在的治疗策略.
相关概念视频
Viral Structure
61.3K
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
61.3K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
2.0K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
2.0K


