Dear Chimera Users, I am trying to morph the complex1 and complex2 from the same system (protein-RNA) to make a video monitoring the conformational changes. As complex 1 is missing one domain and a helix (not visible in the crystal structure), I need to remove these parts in complex 2 to have an equal number of atoms in both complex and could morph it. The resulting video is not so nice because shows the gaps corresponding to the missing part. So, to avoid that, I have modelled the missing part in the complex 1 to have the same atoms, and afer morph it again to make the video, but this is not working. In the transition between complex 1 and complex 2, the RNA encounter one helix on the way that needs to move out to let the RNA to get the position observed in complex 2. If I take out this helix, the video can perfectly be done, but still is not perfect because show gaps. Anybody could give an idea in how to solve the problem? We need the video to include in a publication,. Thanks in advance, Andrés Palencia -- Andres Palencia, PhD Protein RNA Group EMBL Grenoble Outstation 6 rue Jules Horowitz BP181, 38042 Grenoble Cedex 9, France email: palencia@embl.fr phone: + 33 (0)476 20 7860(office)/ + 33 (0)476 20 7014(lab) fax: + 33 (0)476 20 7199 http://www.embl-grenoble.fr/