Dear Gromacs and VMD users. I am trying to visualize a simulation in which a small molecule is interactiong with a protein in a water box. The simulation has been produced using gromacs. I am using VMD for that purpose. I use the .gro and the .xtc files to load the trajectory to the VMD. What's the problem then? The problem is that I can't visualize anything in presence of water, so I need to have only the protein and the small moecule which is named UNK in the gro file, when I use selected atoms in the graphical representations in VMD to show the small molecule and I type UNK in the selected atoms, I get the following error message: the atom selection you typed couldn't be understood Does that mean that I will never be able to visualize the small molecule? Either the protein alone or the whole solvated system can be visualized, but I can't visualize both the protein along with the small molecule without the water...Could that be because in the .mdp file, I have haad protein and nonprotein descriptions? and that's why VMD can't isolate the UNK from the water? I don't know... Hey Justin, thanks alot for the prompt help with the other question I have had about snapshots... Any hint would be very appreciated... Thanks alot Hassan Shallal UOP
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