Hi Sirano, There is no single-click option in Chimera, but you can use the command "center": <http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/center.html> For example, you could select the atom with Ctrl-click and then use the command: center sel You could also use it on a group of atoms (it doesn't have to be just one). I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. meng@cgl.ucsf.edu UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco http://www.cgl.ucsf.edu/home/meng/index.html On Mar 14, 2009, at 12:33 PM, Sirano Dhe-Paganon wrote:

In UCSF-Chimera, I would like to center on an atom of a molecule without zooming-in towards the atom. I found the “focus” command, which centers the atom, but the command includes a zooming-in step; is there a “focus” or “center”-like option that does not zoom-in? Also, most visualization programs have a simple, one-click mouse- button to center on an atom; I cannot find this option in UCSF- Chimera. Sirano