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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am using Chimera to try to visualise and then highlight the position of several amino acid mutations on a virus capsid.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have managed to use the Multiscale module to build the capsid from a PDB file.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My next step is to select the residues of interest. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am able to use the Select command to find the residue within the icosahedral asymmetric unit – e.g. “select #0:14.A”<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>However, when I apply the same command to the modelled surfaces, it doesn’t work. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>More specifically when I run “select #1:14.A” at the command line – nothing happens - not even an error message.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>However, I can hunt around in the modelled surfaces on the screen and then use the mouse to interactively select the residue of interest – so Chimera seems to know which residues are which on the modelled surfaces.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance for any guidance on how to deal with this problem.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><i><span style='color:#1F497D'>Peter Durr<o:p></o:p></span></i></b></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>