Hi Mahendra, If you got a new residue, the command is right. It is only an issue of what is displayed. Just redraw the ribbon (menu: Actions... Ribbon... show, or command: ribbon), or instead of ribbon, show all atoms (for example, menu: Preset... Interactive 2 (all atoms)). Here is the full explanation of the command, in case you wanted to see all the options: <http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/addaa.html> Best, Elaine ----- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Apr 27, 2012, at 12:40 PM, Mahendra B Thapa wrote:
Dear chimera users, I also added an amino acid residue at the N-terminus of a small protein following the posting:
[Chimera-users] Using addaa at the N-terminus?[ posted date:Fri Sep 30 10:36:31 PDT 2011]
The residue is added at the n-terminus but the added residue is not connected to rest of the protein structure in the graphical display [i.e, a little gap between the added residue and the rest of the protein at N-terminus]. Is this due to wrong command ?
Thanks, Mahendra Thapa