Dear justin,<br>thanks for your helpful reply.<br><br>where Gromacs does not have a force field of its own, but is compatible with GROMOS, OPLS, AMBER, and<br>ENCAD force fields. why in "ions.itp" #ifdef _FF_GROMACS is defended?<br>
<br clear="all">Best wishes,<br>Afsaneh Maleki<br><br>