[gmx-users] Permeability determination

[Chetan Puri]

I am trying to do umbrella sampling for a ligand and dopc membrane.
For umbrella sampling pulling step, I am unable to posre_restrain the
lipid, since grompp gives a error due to conflict between posre_restrain
file of lipid and itp file of lipid.
I have 128dopc molecules.

So can someone suggest how to posre_restrain the lipid.

CHETAN