相关实验视频

Updated: Jul 24, 2025

Production of Pseudotyped Particles to Study Highly Pathogenic Coronaviruses in a Biosafety Level 2 Setting

Production of Pseudotyped Particles to Study Highly Pathogenic Coronaviruses in a Biosafety Level 2 Setting

Published on: March 1, 2019

基于微秒分子动力学研究的SARS-COV-2ORF8二元体中L84S突变的结构和功能影响

Shafiqul Islam¹, Md Rimon Parves¹, Md Jahirul Islam¹

¹Division of Infectious disease and Division of Computer Aided Drug Design, The Red-Green Research Centre, Dhaka, Bangladesh.

Journal of biomolecular structure & dynamics

|July 5, 2023

概括

在SARS-CoV-2ORF8蛋白中的L84S突变改变了其二维结构和稳定性. 这种变化影响病毒免疫逃避,为开发新疗法提供了见解.

科学领域:

病毒学病毒学
结构生物学结构生物学
免疫学免疫学免疫学

背景情况:

在SARS-CoV-2的ORF8蛋白对于病毒的传播和免疫规避至关重要.
经常观察到L84S突变,但其结构和功能后果尚不清楚.

研究的目的:

调查L84S和L84A突变对SARS-CoV-2ORF8蛋白质的二次结构和稳定性的影响.
了解这些突变如何影响ORF8相互作用和潜在的免疫调节.

主要方法:

在原生和突变的ORF8蛋白质上进行了一微秒分子动力学 (MD) 模拟.
分析包括构造变化,蛋白质折叠,结构稳定性和二维接口相互作用.
使用了自由能源景观 (FEL) 和主要组件分析 (PCA).

主要成果:

两种L84S和L84A突变都改变了ORF8二元体构造,蛋白质折叠和结构稳定性.
L84S突变诱导了73YIDI76动机的灵活性,可能会影响免疫调节.
突变降低了ORF8二元界面上关键蛋白-蛋白相互作用残留物的频率.

结论:

L84S和L84A突变显著影响SARS-CoV-2 ORF8.8的结构完整性和二维相互作用.
观察到的结构变化,特别是YIDI73和YIDI76动机,可能是改变免疫反应的基础.
这些发现为针对SARS-CoV-2的基于结构的治疗设计提供了基础.

关键词:

在ORF8突变中.进行PCA分析.这就是SARS-CoV-2病毒.联系方式分析联系方式分析免费能源景观 (FEL)分子动力学分子动力学

更多相关视频

Production of a SARS-CoV-2 Virus-Like-Particle System to Investigate Viral Life Cycles In Vitro

Production of a SARS-CoV-2 Virus-Like-Particle System to Investigate Viral Life Cycles In Vitro

Published on: June 6, 2025

Deciphering the Structural Effects of Activating EGFR Somatic Mutations with Molecular Dynamics Simulation

Deciphering the Structural Effects of Activating EGFR Somatic Mutations with Molecular Dynamics Simulation

Published on: May 20, 2020

相关概念视频

Gene Families

Gene Families

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...

Globular and Fibrous Proteins

Globular and Fibrous Proteins

Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...

Structural Protein Function

Structural Protein Function