STRUCTURE BASED PREDICTION OF PH DEPENDENCE OF TM

基于结构的 TM PH 依赖性预测

• 批准号: 6122044
• 负责人: RENJIE WANG
• 金额: --
• 依托单位: JOHNS HOPKINS UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-05 至 1998-08-04
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6122044
• 关键词: biological products; biomaterials; biomedical resource; drug screening /evaluation; education; human tissue; proteins; technology /technique development

We have developed an algorithm for structure-based prediction of the effects of temperature on electrostatic interactions in proteins. This algorithm has been adapted for calculation of the pH dependence of the transition temperature (Tm) of proteins. The approach uses the G determined at one pH value by DSC as a reference point. The pH-dependent component of the free energy of stabilization of the native state is calculated from structure and used to "correct" the calorimetric G in order to account for the effects of pH on the stability of the protein. In order to test the algorithm, we have measured Tm vs pH for horse heart cytochrome-c over a range of conditions of ionic strength.

我们已经开发了一种基于结构的预测算法， 温度对蛋白质静电相互作用的影响。 该算法已适用于计算pH依赖性 蛋白质的转变温度（Tm）。 该方法使用 通过DSC在一个pH值下测定的G作为参考点。 的 稳定化的自由能的pH依赖分量 原生状态是从结构中计算出来的，用于“纠正” 为了解释pH值的影响， 蛋白质的稳定性。 为了测试算法，我们有 马心脏的Tm与pH测量值 细胞色素-C在离子强度的条件范围内。