<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Marco,<div><br></div><div>Many thanks. I'm aware of the APBS type of calculation, but Chimera provides Coulombic Surface Coloring. See </div><div><a href="file:///Applications/Chimera.app/Contents/Resources/share/chimera/helpdir/ContributedSoftware/coulombic/coulombic.html">file:///Applications/Chimera.app/Contents/Resources/share/chimera/helpdir/ContributedSoftware/coulombic/coulombic.html</a></div><div><br></div><div>However, I'm a bit confused by the description. I quote "<span class="Apple-style-span" style="font-family: Times; ">The</span><span class="Apple-style-span" style="font-family: Times; "> </span><span class="Apple-style-span" style="font-family: Times; "><a href="file:///Applications/Chimera.app/Contents/Resources/share/chimera/helpdir/UsersGuide/representation.html#surfaces">molecular surface(s)</a></span><span class="Apple-style-span" style="font-family: Times; "> </span><span class="Apple-style-span" style="font-family: Times; ">should first be displayed (using</span><span class="Apple-style-span" style="font-family: Times; "> </span><span class="Apple-style-span" style="font-family: Times; "><b>Actions... Surface... show</b></span><span class="Apple-style-span" style="font-family: Times; "> </span><span class="Apple-style-span" style="font-family: Times; ">or the command</span><span class="Apple-style-span" style="font-family: Times; "> </span><span class="Apple-style-span" style="font-family: Times; "><a href="file:///Applications/Chimera.app/Contents/Resources/share/chimera/helpdir/UsersGuide/midas/surface.html"><b>surface</b></a></span><span class="Apple-style-span" style="font-family: Times; ">) and then chosen from the list of</span><span class="Apple-style-span" style="font-family: Times; "> </span><span class="Apple-style-span" style="font-family: Times; "><b>Surfaces to color by ESP"</b></span></div><div><font class="Apple-style-span" face="Times"><b><br></b></font></div><div>Following this routine works but does not provide a list of "Surfaces to color by ESP". Probably one has to generate first a grid by the Compute grid option. Somehow, I cannot see how this option is activated from the Volume Viewer.</div><div><br></div><div>Best regards</div><div><br></div><div>George</div><div><br></div><div><br></div><div><font class="Apple-style-span" face="Times"><b><br></b></font><div><div>On Jun 26, 2012, at 3:12 PM, <a href="mailto:sette@uniroma2.it">sette@uniroma2.it</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><br><br>Chimera don't make calculations of electrostatic potential.<br>You can use other softwares for this, like APBS or Delphi.<br><br>Marco<br><br><br>George Tzotzos <<a href="mailto:gtzotzos@me.com">gtzotzos@me.com</a>> ha scritto:<br><br><blockquote type="cite">Hi everybody,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Assuming that one knows the precise residues constituting a binding site, it is possible to calculate the electrostatic potential of these residues only? If yes, how?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Thanks for any advice<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">George<br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">Chimera-users mailing list<br></blockquote><blockquote type="cite"><a href="mailto:Chimera-users@cgl.ucsf.edu">Chimera-users@cgl.ucsf.edu</a><br></blockquote><blockquote type="cite"><a href="http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users">http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users</a><br></blockquote><blockquote type="cite"><br></blockquote><br><br><br>Dr.Marco Sette, Ph.D.<br><br>Department of Chemical Sciences and Technology<br>University of Rome, "Tor Vergata"<br>via della Ricerca Scientifica, 00133, Rome, Italy<br>e-mail:        <a href="mailto:sette@uniroma2.it">sette@uniroma2.it</a><br>e-mail:        <a href="mailto:m77it@yahoo.it">m77it@yahoo.it</a><br>Tel.:          +39-0672594424<br>Fax:           +39-0672594328<br><br><a href="http://www.rete29aprile.it">www.rete29aprile.it</a><br><br><br>----------------------------------------------------------------<br>Invito da parte dell'Ateneo:<br>Il tuo futuro e quello della Ricerca Scientifica hanno bisogno del<br>tuo aiuto. Dona il  5 x mille all'Universita' di Roma Tor Vergata<br>codice fiscale: 80213750583 http://5x1000.uniroma2.it<br><br><br>_______________________________________________<br>Chimera-users mailing list<br>Chimera-users@cgl.ucsf.edu<br>http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users<br></div></blockquote></div><br></div></body></html>