Short answer is to inspect your complex with VMD or Pymol (or some other viewer). Pymol takes pdb input, so unless your structure is contained in a pdb file you must convert it with e.g. trjconv first. If you want a single frame you need to extract one form your trajectory, or, if the final frame form your simulation suffices, then use the -c output from mdrun. Most likely you will want to take care of the periodic boundary conditions, so a round of trjconv is probably needed anyway.

Ask again or look at the gromacs mailing-list archive if there is anything specific that puzzles you.

Erik

On Jan 28, 2013, at 3:30 PM, Sainitin Donakonda wrote:

Hello,

Recently i started working on molecular dynamics on my protein ligand
complex using gromacs i successfully did simulation but i dont know how to
visualize this protein-ligand complex this after MD simulation

Can any body tell me how to do it?

Thanks
Nitin
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