<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Hi,</div><div> I wanted to check what is actually OPLS-2005 forcefield that is recently being referred often for md simulation. However, I also see that whenever, OPLS-2005 is being referred, it cites a 2001 paper by Jorgensen on OPLS forcefield. So, what is actually OPLS-2005?</div><div>So, I wonder what version of OPLS forcefield is present in gromacs 4.5 series. Is it also so-called OPLS-2005 forcefield?</div><div>Sanku</div></div></body></html>