Influence of Neighboring Groups on the Thermodynamics of Hydrophobic Binding: An Added Complex Facet to the Hydrophobic Effect
作者:Nader N. Nasief、David Hangauer
DOI:10.1021/jm401609a
日期:2014.3.27
proentropic in others. A remarkable enthalpy–entropy compensation relationship was also observed, reflecting the fact that the hydrophobic effect is governed by the thermodynamic status of the associated aqueous environment. This study could improve our understanding of the hydrophobic effect and may enhance our ability to design potent ligands that are capable of modulating biological processes.
使用等温滴定量热法(ITC)对在浅疏水口袋中结合的配体侧链进行系统修饰的热力学后果进行了评估,无论是否存在相邻的配体羧酸酯基团。数据显示,羧酸盐可能会通过改变未结合状态和结合状态下水合水的H键/组织状态来显着改变这些修饰的相对热力学特征。发现该羧酸酯基团在某些情况下是前焓的,对熵的,而在另一些情况下是反焓的,对熵的。还观察到了显着的焓-熵补偿关系,这反映了疏水作用受相关水环境的热力学状态支配的事实。