相关实验视频
Updated: Jan 14, 2026

07:02
An Assay for Quantifying Protein-RNA Binding in Bacteria
Published on: June 12, 2019
7.0K
非结构蛋白8的RNA结合灵敏度通过小角度中子散射和alphafold2预测揭示
Xin Jiang1,2,3, Jinxin Xu4,5,6, Zhenyu Liao7
1Department of Physics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China.
ACS nano
|October 17, 2025
概括
SARS-CoV-2非结构蛋白8 (nsp8) 存在于二次体和四次体的形式. 带有暴露核心的四聚体形式不太稳定,但更好地与病毒复制的RNA相互作用.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 分子机制的分子机制
背景情况:
- SARS-CoV-2非结构蛋白8 (nsp8) 对于病毒RNA复制和转录至关重要.
- 蛋白质的灵活结构允许对环境变化作出快速反应.
- 了解nsp8的结构动态是阐明SARS-CoV-2复制的关键.
研究的目的:
- 描述SARS-CoV-2 nsp8二分体和四分体的结构变化.
- 为了研究nsp8结构和RNA相互作用之间的关系.
- 阐明SARS-CoV-2RNA合成的分子机制.
主要方法:
- 使用小角度中子散射 (SANS) 来分析nsp8结构.
- 在结构建模中使用AlphaFold2预测.
- 对nsp8四度体进行了热稳定性测试.
主要成果:
- 与二分体相比,nsp8四分体呈现出更暴露的核心域.
- 四聚合物形式显示较低的热稳定性.
- 暴露的核心域增强了nsp8对RNA相互作用的敏感性和适应性.
结论:
- nsp8二聚和四聚形式之间的结构差异影响RNA合成.
- 在复制过程中,nsp8四聚体的结构被优化为与RNA的相互作用.
- 这项研究提供了SARS-CoV-2RNA复制的分子机制的见解.
更多相关视频
09:15Combining X-Ray Crystallography with Small Angle X-Ray Scattering to Model Unstructured Regions of Nsa1 from S. Cerevisiae
Published on: January 10, 2018
10.3K
14:55Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
15.9K
相关概念视频
Conserved Binding Sites
5.0K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
5.0K
Gene Families
9.8K
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
9.8K
Ligand Binding and Linkage
5.5K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
5.5K