设计,合成和评估一个针对蛋白质-蛋白质相互作用的α-螺旋模拟库
Alex Shaginian1, Landon R Whitby, Sukwon Hong
1Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
Journal of the American Chemical Society
|April 2, 2009
概括
研究人员开发了一个阿尔法螺旋模拟库,以准蛋白质-蛋白质相互作用. 该库有助于理解相互作用,并识别药物发现的关键残留物.
科学领域:
- 药用化学 医学化学
- 化学生物学 化学生物学
- 药物发现 药物发现 药物发现
背景情况:
- 蛋白与蛋白相互作用 (PPI) 在细胞过程中至关重要.
- 破坏PPI是开发新疗法的关键策略.
- 阿尔法螺旋是许多PPI中介的常见结构图案.
研究的目的:
- 设计和合成一个全面的阿尔法螺旋模拟库.
- 识别抑制特定蛋白质与蛋白质相互作用的小分子,如MDM2/p53.3.
- 了解阿尔法螺旋介导PPI的结构要求.
主要方法:
- 基于triaryl模板的α-螺旋模仿剂的代设计和合成.
- 使用溶液相协议组装一个大型库 (8000个化合物).
- 通过酸/液体-液体提取进行净化,以提高可扩展性.
- 对MDM2/p53结合的抑制进行扫描.
主要成果:
- 一个α螺旋模仿化合物的鉴定.
- 成功合成了8000个化合物的多样化的库.
- 展示图书馆在识别PPI抑制剂方面的实用性.
- 了解MDM2/p53识别所涉及的关键残留物和特征.
结论:
- 开发的α螺旋模拟库是针对PPI的宝贵工具.
- 该图书馆促进了新型抑制剂的发现,并提供了机械学的见解.
- 这种方法可以应用于研究其他阿尔法螺旋介导的PPI.
相关概念视频
Protein-protein Interfaces
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
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,...
Ligand Binding Sites
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein Organization
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.
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...


