作为预测大型多蛋白结构的案例研究,对HIV-1多聚蛋白进行建模和分析
Ming Hao1, Tomozumi Imamichi1, Weizhong Chang1
1Laboratory of Human Retrovirology and Immunoinformatics, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA.
International journal of molecular sciences
|February 10, 2024
概括
耐药性人类免疫缺陷病毒 (HIV) 菌株需要新的治疗方法. 我们开发了一种新的工作流程,以预测HIV-1 Pol蛋白质的完整结构,从而有助于开发新的抗病毒药物.
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 药物发现 药物发现 药物发现
背景情况:
- 获得性免疫缺陷综合征 (艾滋病) 是由人类免疫缺陷病毒 (HIV) 引起的.
- 目前的艾滋病毒治疗向病毒酶,但由于病毒快速突变,耐药性越来越令人担忧.
- 艾滋病毒Gag-Pol多蛋白是新型抗病毒策略的关键目标.
研究的目的:
- 研究影响Gag-Pol多蛋白处理的HIV-1整合酶突变 (M50I和V151I) 的分子机制.
- 开发一种计算工作流程,用于预测全长HIV-1 Pol多蛋白的三级结构.
- 建立一个结构基础,以了解HIV-1Pol自处理和开发新的药物.
主要方法:
- 利用计算工作流来预测全长HIV-1 NL4.3 Pol多蛋白的三级结构.
- 与现有的部分HIV-1 Pol结构 (例如,PDB ID: 7SJX) 验证模拟结构.
主要成果:
- 产生了HIV-1 NL4.3 Pol多聚蛋白二聚体的第一个全长的三级结构模型.
- 预测的结构显示出高质量,可与实验确定的部分结构相比较.
- 该模型提供了关于特定突变如何可以抑制Gag-Pol多蛋白成熟的见解,而不会影响二分化.
结论:
- 开发的工作流允许预测大型,复杂的蛋白质结构,包括全长的HIV-1 Pol.
- 这种全长的Pol结构作为研究病毒多蛋白处理和设计新的抗病毒药物的平台.
- 这种结构模型可以指导下一代艾滋病毒治疗方法的开发,以对抗耐药性.
更多相关视频
07:29Determination of Molecular Structures of HIV Envelope Glycoproteins using Cryo-Electron Tomography and Automated Sub-tomogram Averaging
Published on: December 1, 2011
41.5K
22:10Multi-target Parallel Processing Approach for Gene-to-structure Determination of the Influenza Polymerase PB2 Subunit
Published on: June 28, 2013
13.3K
相关概念视频
Protein Complex Assembly
10.6K
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
10.6K
Protein Organization
6.5K
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
The primary structure of a protein is its amino acid sequence....
6.5K
Protein and Protein Structure
79.5K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
A protein's shape is critical to its function. For example, an enzyme...
79.5K
Protein Folding
8.0K
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
8.0K
