From: Miro Astore (
Date: Sun Jan 19 2020 - 16:35:54 CST

Do you get an error with pdb2gmx? I have been able to build the topology
from the vmd generated membrane no problem.

Next, Miro

On Sun, Jan 19, 2020 at 6:28 PM Yogesh Sharma <>

> hi
> I generated bilayer using VMD but the topology is in charmm forcefield .
> is there any way to convert it to gromac? there are differences in
> nomenclature for POPC residues in both forcefield.