多样碎片聚类和水排除确定了蛋白质热点
John L Kulp1, John L Kulp, David L Pompliano
1Chemistry Division, Naval Research Laboratory, Washington, D.C. 20375-5342, USA.
Journal of the American Chemical Society
|June 21, 2011
概括
模拟火通过分析有机探针和水相互作用,确定了蛋白溶酶 (HEWL) 的关键结合点. 这种方法可以准确地预测蛋白质-连接体结合热点,无论蛋白质的构成如何.
科学领域:
- 计算化学计算化学
- 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:
- 确定蛋白质上的特定结合点对于理解生物功能和开发向治疗来说至关重要.
- 蛋白质的灵活性和形状变化可能会使对联结热点的预测变得复杂.
研究的目的:
- 调查化学潜力的模拟化在蛋白色酶 (HEWL) 上定位高亲和度结合点的有效性.
- 为了确定蛋白质的形状或灵活性是否会影响这些结合性"热点"的准确预测.
主要方法:
- 模拟化学潜力的化被用来绘制有机探针和水分子的结合亲和关系.
- 分析了HEWL在不同形状状态中的八个静态结构.
- 有机探针的聚类和水分子的排除被用来确定潜在的结合点.
主要成果:
- 在所有分析的HEWL形状中,有机探针始终聚集在已知的结合点 (热点) 中.
- 紧密结合的水分子有效地排除了非目标位置的碎片集群,隔离了主要的热点.
- 无论蛋白质构成如何,热点的位置都能准确地预测,即使没有模拟蛋白质的灵活性.
结论:
- 模拟回火是一种强大的方法来识别蛋白质结合热点,独立于蛋白质构成状态.
- 不同有机探针的共同定位,不包括水,可靠地表明潜在的小分子结合或蛋白质与蛋白质相互作用地点.
相关概念视频
Conservation of Protein Domains Over Different Proteins
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Conserved Binding Sites
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 analyses the...
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 analyses the...
Conservation of Protein Domains
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Protein Networks
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...


