[Chimera-users] Mouse control

Elaine Meng meng at cgl.ucsf.edu
Tue Jun 2 16:17:57 PDT 2015

Another thought is that maybe you didn’t know how to move the structure left/right/up/down (how to “translate” it).  By default, this is done with middle mouse button.  I don’t know if you have a middle mouse button.  If  you don’t, you can use the Chimera preferences (menu: Favorites… Preferences, then in the preferences dialog, see category “Mouse”) to change which mouse button does what.  You can just change it temporarily if you prefer.

The summary of how to move structures with the mouse (or touchpad, etc.) is here:



On Jun 2, 2015, at 1:50 PM, Elaine Meng <meng at cgl.ucsf.edu> wrote:

> Dear Prof. Szabo,
> I can’t see your image, but the following might help:
> menu: Actions… Focus
> - OR -
> command: focus
> … if you don’t have anything selected, either of the above should center and resize to frame all of the displayed stuff in the main window.  By “selected” I mean when you Ctrl-click on something in the main window, it is highlighted with green outline.  If you have something selected, you can use that same menu action to focus only on the selected part (the corresponding command would then be “focus sel”).
> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/menu.html#menuactions>
> <http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/focus.html>
> Then, if needed, you can enlarge by zooming with the mouse or in the Side View, or with the “scale” command. I hope this helps!
> For future questions, we recommend you send to chimera-users at cgl.ucsf.edu instead of only to me, so that others can see the answers, or give better answers than mine. Regards,
> 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 Jun 2, 2015, at 1:27 PM, A G Szabo <agszabo at bell.net> wrote:
>> Elaine
>> You were helpful in early April I thought I would ask another question.
>> I have been working with a PDB file, 2J28,  that is the  structure of  a
>> full ribosome with a Signal Recognition Protein and piece of  RNA bound to
>> the ribosome. I figured out how to get rid of  all the various parts of the
>> Ribosome, and visualize only the SRP and piece of RNA attached to it. 
>> The problem is  that  I can't figure out how to centre that part of the
>> overall structure.  If I move the SRP/RNA with the wheel  on the mouse it
>> does move to the center of the screen but in the process  it becomes very
>> small.
>> I need to be able  to  transpose  the SRP/RNA and then enlarge it.
>> Can't figure it  out  and while there is some  stuff in the tutorials and
>> user info, I couldn't find anything that pertained  to what I  needed to
>> do.
>> This is the SRP - RNA structure from Protein Workshop after all the
>> ribosomal particles were hidden.
>> The image in Chimera is even smaller.
>> Thank you again for your help.
>> Arthur G.  Szabo
>> Professor Emeritus
>> Chemistry
>> Wilfrid  Laurier University
>> Waterloo Canada.
>> <winmail.dat>

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