相关实验视频
Updated: Oct 4, 2025

Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
结合ACE2是沙贝科病毒的祖先和可进化的特征
Tyler N Starr1,2, Samantha K Zepeda3, Alexandra C Walls3
1Basic Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. tstarr@fredhutch.org.
结合ACE2是沙贝科病毒的古老特征,而不是最近的发展. 这种祖先的能力虽然在某些群体中消失了,但可以重新出现,这凸显了各种蝙蝠病毒的广泛溢出潜力.
科学领域:
- 病毒学
- 进化生物学
- 分子生物学
背景情况:
- 两种沙贝科病毒,即SARS-CoV-1和SARS-CoV-2,已经引起了人类的重大疫情.
- 这两种病毒都利用尖端受体结合域 (RBD) 与人类ACE2结合.
- 在不同的蝙蝠沙贝科病毒中,与ACE2正系病毒的结合是零星的.
研究的目的:
- 调查沙贝科病毒中ACE2结合的进化史.
- 探索蝙蝠沙贝科病毒之间跨物种ACE2结合的可能性.
- 了解ACE2结合的可变性及其对溢出潜力的影响.
主要方法:
- 使用高通量测定来分析ACE2结合.
- 检查了多种类型的沙贝科病毒及其ACE2类型.
- 研究了单个氨基酸突变对ACE2结合亲和力的影响.
主要成果:
- 结合ACE2是sarbecovirus RBDs的一种祖先特征,在某些类型中随后出现损失.
- 来自亚洲以外的蝙蝠沙贝病毒显示出ACE2结合能力.
- 结合ACE2是高度可进化的;单个突变可以赋予结合新ACE2的类型.
- 在SARS-CoV-2变种和SARS-CoV-1变种中,N501Y突变对人类的ACE2结合 afinity 有不同的影响.
结论:
- 沙贝科病毒中的ACE2结合具有深远的祖先起源和显著的进化可塑性.
- 这些发现扩大了具有动物传播潜力的沙贝科病毒的范围.
- 了解ACE2结合的进化动态对于疫情准备至关重要.
更多相关视频
09:12Author Spotlight: Improved Method for Production and Purification of Adeno-Associated Viral Vectors
Published on: April 5, 2024
09:20Isolation of Next-Generation Gene Therapy Vectors through Engineering, Barcoding, and Screening of Adeno-Associated Virus AAV Capsid Variants
Published on: October 18, 2022
相关概念视频
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Conserved Binding Sites
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...
Allosteric Proteins-ATCase
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
Leaky Scanning
Ligand Binding and Linkage
The Antiviral System of Bacteria and Archaea: CRISPR