通过奥里多宁尼尼抑制冠状病毒主要蛋白酶的结构基础
Pei Zeng1, Xuelan Zhou2, Li Guo2
1Jiangxi Province Key Laboratory of Pharmacology of Traditional Chinese Medicine,School of Pharmacy, Gannan Medical University, Ganzhou, 341000, China.
Biophysical journal
|January 24, 2026
概括
一种天然化合物奥里多宁在很大程度上抑制了冠状病毒主要蛋白酶 (Mpro),包括SARS-CoV-2变种. 这种共价抑制剂显示出开发新型冠状病毒抗病毒药物的潜力.
科学领域:
- 病毒学 病毒学
- 药物发现 药物发现 药物发现
- 结构生物学 结构生物学
背景情况:
- 七种冠状病毒感染人类,其中SARS-CoV-2导致全球大流行.
- 开发广泛的抗病毒药物对于管理当前和未来的冠状病毒威胁至关重要.
- 保存的冠状病毒主要蛋白酶 (Mpro) 是抗病毒药物开发的关键目标.
研究的目的:
- 识别和表征具有针对冠状病毒Mpro的宽谱活性的天然化合物.
- 为了研究Mpro.的奥里多宁抑制的作用机制和结构基础.
- 评估奥里多宁作为新型冠状病毒治疗的潜在化合物.
主要方法:
- 对天然化合物进行Mpro抑制活性选.
- 用X射线晶体学来确定HCoV-229E Mpro的复杂结构,其中含有oridonin.
- 分子动力学 (MD) 模拟以评估结合稳定性.
- 生物化学试验分析抑制作用和结合方式.
主要成果:
- 奥里多宁证明了来自SARS-CoV-2,SARS-CoV,HCoV-NL63和HCoV-229E的Mpro的广泛抑制.
- 奥里多宁还抑制了SARS-CoV-2的Mpro突变 (兰布达变种).
- 结构和MD分析显示,通过修饰氨酸残留物,奥里多宁与Mpro活性位点具有独特的非二模共价结合模式.
结论:
- 奥里多尼是冠状病毒Mpro的强大,广泛的抑制剂.
- 奥里多宁的共价结合机制为Mpro抑制提供了一个新的策略.
- 奥里多宁作为一种有前途的化合物,用于开发对各种冠状病毒的共价抑制剂.
相关概念视频
Feedback Inhibition
57.0K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.0K
Structures of Solids
17.6K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.6K
Enzyme Inhibition
91.8K
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.
91.8K
RNA Structure
78.9K
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
78.9K
Inhibition of Cdk Activity
5.8K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.8K
Structural Isomerism
21.5K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
21.5K


