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<div>All of the Charmm force field parameters may be found on Alex MacKerell's website: <a href="http://mackerell.umaryland.edu/CHARMM_ff_params.html">http://mackerell.umaryland.edu/CHARMM_ff_params.html</a>. Converting from Charmm units and potential form to Gromacs is straightforward.</div><div><br></div><div>Andrew </div><br><div><div>On Dec 7, 2011, at 12:59 PM, Michael McGovern wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><font class="Apple-style-span" face="'times new roman', 'new york', times, serif" size="3">Hi everyone. I'm doing a simulation in gromacs using the charmm36 parameters from the gromacs website. The parameters don't seem to have carbohydrates, which are part of the charmm36 force field. In particular, I need parameters for trehalose. Is there anywhere I can find these parameters in a format </font><font class="Apple-style-span" face="'times new roman', 'new york', times, serif">suitable</font><font class="Apple-style-span" face="'times new roman', 'new york', times, serif" size="3"> for gromacs?</font></div></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">--<span class="Apple-converted-space"> </span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">gmx-users mailing list<span class="Apple-converted-space"> </span><a href="mailto:gmx-users@gromacs.org">gmx-users@gromacs.org</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="http://lists.gromacs.org/mailman/listinfo/gmx-users">http://lists.gromacs.org/mailman/listinfo/gmx-users</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Please search the archive at <a href="http://www.gromacs.org/Support/Mailing_Lists/Search">http://www.gromacs.org/Support/Mailing_Lists/Search</a> before posting!</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Please don't post (un)subscribe requests to the list. Use the<span class="Apple-converted-space"> </span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">www interface or send it to <a href="mailto:gmx-users-request@gromacs.org">gmx-users-request@gromacs.org</a>.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Can't post? Read <a href="http://www.gromacs.org/Support/Mailing_Lists">http://www.gromacs.org/Support/Mailing_Lists</a></div> </blockquote></div><br></body></html>