相关实验视频

Updated: Jan 10, 2026

A Fluorogenic Peptide Cleavage Assay to Screen for Proteolytic Activity: Applications for coronavirus spike protein activation

A Fluorogenic Peptide Cleavage Assay to Screen for Proteolytic Activity: Applications for coronavirus spike protein activation

Published on: January 9, 2019

对肠冠状病毒 (FECV) 主蛋白酶主要抑制剂结合的结构分析

Arooma Maryam¹, Stephanie A Moquin², Dustin Dovala²

¹Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.

|November 27, 2025

概括

研究人员研究了猫科冠状病毒主要蛋白酶 (Mpro) 抑制剂,揭示了独特的结合部位特征. 为S4循环量身定制的抑制剂可以增强对猫类和其他冠状病毒的疗效.

科学领域:

结构生物学结构生物学
病毒学病毒学
药用化学医学化学

背景情况:

冠状病毒,包括猫类冠状病毒 (FECV),构成动物感染的风险.
针对主要蛋白酶 (Mpro) 的抑制剂显示为广泛的抗病毒疗法具有前途.
了解抑制剂-Mpro相互作用对于药物开发至关重要.

研究的目的:

阐明抑制剂与FECV Mpro.结合的结构基础.
为了确定影响抑制剂疗效的FECV特异性特征.
提出优化现有的Mpro抑制剂的策略.

主要方法:

使用X射线结晶学来确定与FECV Mpro.结合的四种抑制剂 (GC376,PF-00835231,nirmatrelvir,ibuzatrelvir) 的结构.
结构分析的重点是Mpro活性部位和抑制剂相互作用.
研究了结构-活性关系,以指导抑制剂设计.

主要成果:

在Mpro活性部位中发现了明显的FECV特征.
发现S4循环是增强抑制剂结合的关键区域.
观察到抑制剂和FECV Mpro残留物Q187,P188和S189之间的特定相互作用.

结论:

这项研究增强了对FECV Mpro.的抑制剂特异性的理解.
在P3位点定制具有特定异环基团的抑制剂可以优化与S4循环的参与.
这些发现支持开发针对猫类冠状病毒和潜在的其他冠状病毒菌株的新型抗病毒药物.

关键词:

冠状病毒冠状病毒晶体结构晶体结构药物设计药物设计主要蛋白质酶的主要蛋白质酶蛋白酶抑制剂是一种蛋白酶抑制剂.

更多相关视频

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods

Published on: December 21, 2019

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

相关概念视频

Enzymes

Enzymes

Inside living organisms, enzymes act as catalysts for many biochemical reactions involved in cellular metabolism. The role of enzymes is to reduce the activation energies of biochemical reactions by forming complexes with its substrates. The lowering of activation energies favor an increase in the rates of biochemical reactions.
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...

Enzyme Inhibition

Enzyme Inhibition

Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.