Dear Urszula, Build Structure/Join Models is only for when the two parts are in two different models (if you opened those parts from two separate files, for example). If the bases are in the same model already, you would instead use Build Structure/Adjust Bonds, or the "bond" command, as suggested in my previous reply: <http://plato.cgl.ucsf.edu/pipermail/chimera-users/2015-March/010766.html> Or, if you are building starting from nothing, use Build Structure/Start Structure. It can build helical DNA and/or RNA. I hope this helps, 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 Mar 12, 2015, at 7:47 AM, "Urszula Uciechowska" <urszula.uciechowska@biotech.ug.edu.pl> wrote:
Dear chimera users,
Is it possible to join the DNA bases? I could not find it in manual. I would like to join the Guanine with Thymine. I saw in the Build Structure/Join Models form other bond. However is not working for me in this case.
best regards Urszula