一项关于松鼠CoV和COVID-19 Omicron的性质的比较实验和计算研究
Lai Wei1, Lihua Song1, A Keith Dunker2
1College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100089, China.
International journal of molecular sciences
|July 27, 2024
概括
松鼠冠状病毒 (CoV) 与SARS-CoV-2共享独特的病毒外特征,这表明存在联系. 两者都表现出低蛋白质障碍,与病毒衰减和生存相关,特别是在挖洞动物中.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 进化生物学 进化生物学
背景情况:
- 确切的起源和SARS-CoV-2的进化联系仍在调查中.
- 与挖洞动物相关的冠状病毒 (CoV),如,表现出独特的蛋白质结构.
- "外疾病模型"提出病毒蛋白疾病与宿主适应之间的联系.
研究的目的:
- 为了调查松鼠冠状病毒和SARS-CoV-2之间的关系.
- 探索蛋白质疾病在病毒结构和衰减中的作用.
- 为了比较松鼠CoV-2017和SARS-CoV-2 Omicron的病毒特征.
主要方法:
- 病毒蛋白结构的比较分析,重点关注膜 (M) 和核囊 (N) 蛋白质疾病.
- 使用计算分析来评估蛋白质疾病特征.
- 通过病毒生长和斑块形成试验进行实验验证.
主要成果:
- 长冠状病毒和SARS-CoV-2共享一种低M蛋白异常,表明"硬外".
- 班戈林-CoVs的N蛋白质疾病范围与蝙蝠-CoVs相比更接近SARS-CoV-2.
- 潘戈林-CoV-2017和SARS-CoV-2 Omicron (XBB.1.16) 显示出类似的病毒衰减,与计算结果一致.
结论:
- 共同的蛋白质疾病特征支持类CoVs和SARS-CoV-2之间的特殊关系.
- 低核体蛋白质障碍与病毒衰减有关,正如在型冠状病毒和SARS-CoV-2 Omicron中观察到的那样.
- 这些发现为了解冠状病毒的进化和病原性提供了-疾病模型的进一步证据.
相关概念视频
Viral Recombination
25.8K
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
25.8K
Viral Mutations
40.9K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
40.9K
Convergent Evolution
34.7K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
34.7K
Conjugated Proteins
29.9K
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
29.9K
Single Nucleotide Polymorphisms-SNPs
20.0K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
20.0K
Human Virome
42
The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible...
42


