探索Sigma-1受体线性联体的结构要求:实验和计算方法
Lisa Lombardo1, Salvatore Mirabile1, Rosaria Gitto1
1CHIBIOFARAM Department University of Messina, Viale F. d'Alcontres 31, I-98166 Messina, Italy.
Journal of chemical information and modeling
|June 28, 2024
概括
研究人员使用计算方法为西格玛-1受体 (S1R) 开发了一种新的药模型. 这种模型有助于设计强大的S1R配体,新化合物具有与已知的药物相似的高亲和力.
科学领域:
- 药理学和计算化学
- 神经科学和药物发现
背景情况:
- 西格玛-1受体 (S1R) 是一个关键蛋白质,参与许多生物功能,与各种蛋白质和离子通道相互作用.
- 了解S1R的结构,特别是其三聚体组织和结合体结合口袋,对于开发向治疗来说至关重要.
研究的目的:
- 为西格玛-1受体 (S1R) 开发一种高度选择性和准确的药模型.
- 利用计算模拟和实验验证以指导新型S1R配体的发现.
主要方法:
- 应用了多步计算程序,包括S1R共晶结构的分子动力学模拟.
- 开发了一种纳入特定疏水特征的药模型,并排除了用于增强选择性的体积.
- 通过ROC曲线分析验证了该模型,并通过合成和结合测试实验测试了新的4-phenylpiperazine基化合物.
主要成果:
- 开发的药型号准确地确定了关键特征,包括正电离性,疏水性特征和特定的排除体积.
- 该模型在区分活性与非活性S1R配体方面表现出高的预测能力.
- 一种新型合成的化合物,2-(3-甲基-1-piperidyl)-1-(4-phenylpiperazin-1-yl) 乙 (3),表现出与利可比的S1R亲和力 (基值为4.8nM与2.6nM).
结论:
- 精细的药模型作为一种有价值的工具,用于合理设计和发现强大的西格玛-1受体配体.
- 这项研究强调了计算机建模和实验验证在S1R药物发现中的成功整合.
相关概念视频
02:40Ligand Binding Sites
12.8K
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...
12.8K
00:49Ligand Binding and Linkage
4.8K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
4.8K
02:18The Equilibrium Binding Constant and Binding Strength
12.9K
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
12.9K