Hello, I am trying to calculate the Ramachandran plot for a molecules based on non-standar aminoacids, parametrized with the Gaff force field and simulated with Gromacs 4.0.7. When I try using g_rama -f trajectory.xtc -s topology.tpr -o rama.xvy I get: Found 0 phi-psi combinations.
I suppose the problem is the nomenclature of my atoms, since I don´t have any CA named atoms. Is there any way to calculate g_rama for non-standar residues defining the atoms I need? Thanks a lot for your help. Best whishes, Rebeca Garcia Santiago de Compostela University Spain
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