受体VLDLR通过多种不同的模式与东方马类脑炎病毒结合
Duanfang Cao1, Bingting Ma2,3,4, Ziyi Cao1,5
1National Laboratory of Biomacromolecules, Key Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences (CAS), Beijing, 100101, P.R. China.
Nature communications
|August 10, 2024
概括
东部马脑炎病毒 (EEEV) 使用非常低密度脂蛋白受体 (VLDLR) 进入细胞. 特定的VLDLR突变增强了EEEV的附着性,这表明某些个体的敏感性增加了.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 分子相互作用 分子相互作用
背景情况:
- 东部马脑炎病毒 (EEEV) 是一个重要的人类病原体.
- 非常低密度脂蛋白受体 (VLDLR) 被确定为EEV进入的关键细胞受体.
研究的目的:
- 阐明EEEV与VLDLR相互作用的结构和生化基础.
- 为了研究VLDLR结合如何影响EEEV细胞附着.
主要方法:
- 电子显微镜用于结构分析.
- 生物化学试验用于研究蛋白质-配体相互作用.
- 位点定向的突变发生,以评估VLDLR变异.
主要成果:
- VLDLR通过其LDLR类A (LA) 重复在三个不同的位置 (A,B,C) 结合EEEV.
- 确定了两个主要的结合模式,即LA1-2和LA3-5介导.
- 破坏LA1-2结合减少了EEEV的附着,而W132G VLDLR突变通过改变结合模式来增强了它.
结论:
- VLDLR通过涉及多个结合点和模式的复杂相互作用来调解EEEV的进入.
- 一种特定的VLDLR突变 (W132G) 增强了EEEV的附着性,表明人类潜在的遗传敏感性.
- 了解这些相互作用对于开发抗病毒策略至关重要.
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