AMBER TI Tutorials

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A simple TIMD tutorial about T4-lysozyme

Introduction to TIMD

This is a TIMD tutorial based on the tutorial written by Thomas Steinbrecher on the site[1]. But some important changes have been made to suit the current AMBER 10 version according to Miranda's tutorial from Simmerling's lab.

In this tutorial, free energy calculations will be used to calculate the relative binding free energy of two simple ligands, benzene and phenol to the T4-lysozyme mutant L99A. Free energies will be computed by using the thermodynamic integration facilities of the sander program. A modified van-der-Waals equation (softcore potentials) are used to ensure smooth free energy curves.

Thermodynamic cycle and Method

Setup System

Generate Start Structures