Hi all, I have downloaded the latest git version of gromacs (yesterday) in which it is possible to use the charmm27 force field, I constructed the topology for my protein using the pdb2gmx program, everything goes ok also with the solvation, but then when i run the MD i notice that coulomb and LJ interaction are 0 and also the protein consequently unfold. Did any of you found this kind of problem? Could some of you rpopose eventually a solution? Thanks in advance, Fabrizio
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