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结晶结构主要蛋白质酶的SARS-CoV-2变体结合佐醇基抑制剂
Jiqing Luo1, Weiwei Wang2, Haihai Jiang3
1College of Pharmaceutical Sciences, Gannan Medical University, Ganzhou 341000, China.
Acta biochimica et biophysica Sinica
|June 26, 2023
概括
针对SARS-CoV-2的主要蛋白酶 (M pro) 的佐醇抑制剂显示出对变种的承诺. 晶体结构显示YH-53与Mpro突变体形成共价键,有助于更广泛的抗病毒药物开发.
科学领域:
- 生物化学 生化学
- 结构生物学 结构生物学
- 病毒学 病毒学
背景情况:
- 严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 主蛋白酶 (M pro) 对于病毒复制至关重要,也是抗病毒疗法的关键标.
- 新出现的SARS-CoV-2变种需要开发有效的药物来对抗突变的Mpro酶.
- 佐衍生物已经成为Mpro的有前途的抑制剂.
研究的目的:
- 为了确定SARS-CoV-2 Mpro突变的结晶结构,它们与基于佐的抑制剂YH-53.3结合.
- 从各种SARS-CoV-2变体中阐明YH-53与M的结合相互作用和分子决定因素.
- 为开发更广泛的本佐提亚基抗病毒药物提供结构性见解.
主要方法:
- 使用X射线晶体学来确定YH-53的结构,该结构与M型突变分子 (K90R,G15S,Y54C,M49I,P132H) 复杂.
- 进行了结构分析,以确定突变M pros.中YH-53和催化残留Cys145之间的关键相互作用.
- 在不同的Mpro变体中对结合模式进行比较分析.
主要成果:
- 晶体结构揭示了YH-53的佐醇组与SARS-CoV-2 M pro突变的催化Cys145之间的共价C-S键的形成.
- 确定了控制YH-53与M从Beta,Lambda,Delta和Omicron变种结合的关键分子相互作用.
- 在多个Mpro变种中,YH-53的结合模式被表征为Mpro变种,包括来自Omicron亚系BA.5和B.1.1.529.的变种.
结论:
- 结构数据证实了YH-53能够在各种SARS-CoV-2变种中共同抑制M.
- 了解结合相互作用为设计下一代西醇抑制剂提供了基础.
- 这项研究支持开发更有效,更广泛,更安全的针对SARS-CoV-2 M pro的抗病毒药物.
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