冠状病毒主要蛋白酶的酶动力学模型,包括二元化和连接体结合
Van Ngoc Thuy La1, Lulu Kang2, David D L Minh3
1Department of Biology, Illinois Institute of Technology, Chicago, IL 60616, USA.
bioRxiv : the preprint server for biology
|January 13, 2025
概括
这项研究模拟了冠状病毒主要蛋白酶 (MPro),以解释双相度响应曲线. 研究结果揭示了抑制剂和基质如何差异影响MPro二分化和活性,这对于抗病毒药物开发至关重要.
科学领域:
- 生物化学 生化学
- 酶学 是一种酶学.
- 结构生物学 结构生物学
背景情况:
- 冠状病毒主要蛋白酶 (MPro) 对于病毒复制至关重要,也是SARS-CoV-2抗病毒药物的关键标.
- 一些MPro酶活性显示双相度响应曲线 (CRCs),在低度激活,在高度抑制.
- 之前涉及联体诱导二分化的解释缺乏定量运动模型.
研究的目的:
- 开发和验证MPro酶活性的一种定量动态模型,该模型整合了二分化和联体结合.
- 阐明MPro.中双相CRCs背后的分子机制.
- 描述一种抑制剂 (GC376) 和基质对MPro.的结合和运动作用.
主要方法:
- 开发一种新的动力学模型,其中包括二元化和带结合.
- 模型与使用贝叶斯回归的多样化生化和生物物理数据的全球拟合.
- 分析抑制剂GC376和光基质对MPro活性和二元化的影响.
主要成果:
- 开发的动力模型成功解释了MPro双相CRCs.
- 抑制剂GC376强烈诱导MPro二分化,并与二分体结合,没有合作性.
- 光基质对二分化的影响最小,但在与二分体结合时表现出积极的合作性.
- 对二分化和结合合作性的差异效应解释了观察到的双相行为.
结论:
- 该研究提供了对MPro双相CRC的定量机制解释,将其与对二分化和基质周转的联体特异性影响联系起来.
- 了解这些动力学对于设计针对MPro的有效SARS-CoV-2抗病毒策略至关重要.
- 该模型为分析表现出复杂的度依赖行为的其他酶提供了一个框架.
关键词:
贝叶斯回归是一种贝叶斯回归.度 - 反应曲线 (CRC)模度化 (Dimerization) 是一个过程.主蛋白酶 (MPro) 是一个主要的蛋白质酶.中东呼吸系统综合征 (MERS)严重急性呼吸系统综合征 (SARS)更多相关视频
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