乙型肝炎病毒受体结合的结构基础
Jinta Asami1, Jae-Hyun Park2, Yayoi Nomura3
1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan.
Nature structural & molecular biology
|January 17, 2024
概括
乙型肝炎病毒 (HBV) 使用其preS1域将NTCP受体结合到肝细胞上. 这项研究揭示了这种相互作用的结构,揭示了病毒进入的诱导适应机制.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 肝病学 肝病学是一种肝病学.
背景情况:
- 乙型肝炎病毒 (HBV) 在全球感染了超过2.9亿人,导致肝细胞癌.
- 乙型肝炎病毒进入肝细胞是通过大表面蛋白质与-陶罗酸盐共运输多 (NTCP) 结合的myristoylated preS1域进行介导的.
研究的目的:
- 通过冷电子显微镜 (cryo-EM) 确定与人类NTCP结合的基化preS1的结构.
- 阐明HBV宿主受体附着和病毒进入的分子机制.
主要方法:
- 低温电子显微镜 (cryo-EM) 用于可视化基化preS1 (残留物2-48) 和人类NTCP的复合物.
- 结构分析侧重于结合界面和形状变化.
主要成果:
- 该结构揭示了preS1在NTCP传送器中的意外折叠.
- 的N端半部分嵌入NTCP的面向外的道,而C端半部分与细胞外表面相互作用.
- 这种相互作用表明一种诱导适合机制,促进了高亲和度结合.
结论:
- 这项研究揭示了HBV通过NTCP受体附着于肝细胞的结构基础.
- 这些发现为控制HBV进入的诱导适应机制提供了详细的理解.
- 这种结构蓝图可以指导针对病毒进入的新型抗HBV疗法的合理设计.
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