<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi JD,<div><span class="Apple-tab-span" style="white-space:pre"> </span>My understanding of the workings of Amber is a little shaky, but I think you want <your Chimera installation>/bin/amber11/dat/leap/parm/gaff.dat. It's certainly <i>one</i> of the files in that parm directory at least.</div><div><br></div><div>--Eric</div><div><br><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 16px; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="5" style="font: normal normal normal 16px/normal Helvetica; "> Eric Pettersen</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="5" style="font: normal normal normal 16px/normal Helvetica; "> UCSF Computer Graphics Lab</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="5" style="font: normal normal normal 16px/normal Helvetica; "> <a href="http://www.cgl.ucsf.edu">http://www.cgl.ucsf.edu</a></font></div><br class="Apple-interchange-newline"></div><div>On Jul 13, 2010, at 2:21 AM, Jean Didier Pie Marechal wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>HI guys,<br><br>I am trying to add another type of atom in the GAFF parameter file that is called during the minimization process and can't find the right place. <br><br>Could you give me a hand please?<br><br>best,<br>JD</div></blockquote></div></div><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><p style="margin: 0.0px 0.0px 0.0px 0.0px"><span class="Apple-style-span" style="font-size: medium;"><br></span></p></div></span></div></body></html>