> ### Energy minimization

> The <it>energy minimization</it> ensured a relaxation of the hydrogen atoms. This can be important since PDB files in general lack the hydrogen atoms and they have to be added using heuristics.
> Now we can perform a <it>molecular dynamics simulation</it>. When you press Next, the simulation will start. You can watch the structural changes the molecule would undergo in time.
> We will perform 30 steps and the current step number will be shown in the statusbar at the bottom of the main window.
> Don't worry if the simulation takes a moment to start.