[gmx-users] Topology file for Fullerene with OPLS_AA force field

[saeed poorasad]

Hi Gromacs users , 
I want to have a system with one C60 and about 1000 water molecules .I tried to use pdb2gmx on C60.pdb but I got fatal error , I think the problem is because of my PDB file .I want to define C-delta atom of the aromatic tryptophan amino acid for C60 carbons and i want to use oplsaa force field.

this is a part of my PDB file : HETATM    1  CD1 TRP     0       3.341   0.669   0.088  1.00  0.00           CHETATM    2  CD1 TRP     0       3.266  -0.548  -0.502  1.00  0.00           CHETATM    3  CD1 TRP     0       2.990  -1.662   0.229  1.00  0.00           CHETATM    4  CD1 TRP     0       2.750  -0.402  -1.741  1.00  0.00           C
I have no experience with GROMACS , so I will be grateful if you can help me .
Best ,Saeed.