<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Dear All,</span></div><div><span></span> </div><div><span>Will you please suggest on how to select force field for the specific requirement from the 18 force fields of the pdb2gmx of the gromacs 4.5.5 version?</span></div><div><span></span> </div><div><span>Cheers,</span></div><div><span></span> </div><div><span>Acoot</span> </div> </div></body></html>