[gmx-users] Addition of ions in vacuum simulations

[Mark Abraham]

> Hi Mark,
>
> I think, it is not a chemistry question exactly.
> Genion command asks for a group whose atoms are replaced with ions.
> I have no solvent molecules in my system.
> In this respect, how can I incorporate ions into my system?

Check your assumptions. Does it make sense to put isolated ions outside a
protein in vacuum?

Mark