Hmm... What's the problem? OPLS contains the parameters both for S and O. If you want a better model of this anion, I'd suggest to look for the respective articles.
Also, if I'm not mistaken [(SO4)2-] topology was present somewhere in the original gromacs distribution. Best. Dr. Vitaly Chaban On Sat, Jun 12, 2010 at 4:03 PM, shiva birgani <sh.birg...@gmail.com> wrote: > Hi > > I am trying to simulate Lysozyme in solution of water and Sodium Sulfate > (Na2SO4). But I don’t know how I can look for the parameters of [(SO4)2-] in > OPLS -Force field. Could you please help me in this regards? > > regards > > Shiva Birgani > -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. Can't post? Read http://www.gromacs.org/mailing_lists/users.php
