Assessing Protein Kinase Selectivity with Molecular Dynamics and MM-PBSA Binding Free Energy Calculations

Authors


Corresponding author: Giulio Rastelli, giulio.rastelli@unimore.it

Abstract

An application of molecular dynamics and molecular mechanics Poisson–Boltzmann surface area techniques to the prediction of protein kinase inhibitor selectivity is presented. A highly active and selective ERK2 inhibitor was placed in equivalent orientations in five different protein kinases (SRC, LCK, GSK3, JNK3 and Aurora-A). Binding free energies were then computed with the molecular mechanics Poisson–Boltzmann surface area approach using 15 nanosecond fully solvated molecular dynamics trajectories of the corresponding protein-ligand complexes. The results show correlation with experimentally determined selectivities and provide useful insights into the underlying structural determinants for selectivity.

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