Abstract
ABSTRACTAlthough computer-aided drug design has greatly improved over time, its application in the pharmaceutical industry is still limited by the accuracy of association constant (Ka) predictions. Towards improving this situation, the Statistical Assessment of the Modeling of Proteins and Ligands (SAMPL) is a series of community-wide blind challenges aimed to advance computational techniques as standard predictive tools in rational drug design (https://en.wikipedia.org/wiki/SAMPL_Challenge). As an empirical contribution to SAMPL6, we report here the Ka and thermodynamic parameters (∆G, ∆H, – T∆S) of eight guests binding to two hosts (OA and TEMOA) using ITC. Both hosts contain a unique, well-defined binding pocket capable of storing guests with up to ten non-hydrogen atoms, whilst the selection of amphiphilic guests contain a range of saturated and unsaturated substituents . The thermodynamic data from this study will allow the challenge participants of SAMPL6 to test the accuracy of their computational protocols for calculating host-guest affinities.
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