[Chimera-users] symmetry axis

Elaine Meng meng at cgl.ucsf.edu
Mon Nov 21 09:48:46 PST 2016


Hi Jiri,
As I understand it, you would need to open two separate copies of the structure, superimpose the two sets of atoms for which you want to see the axis (like A to B, or domain 1 of A to domain 2 of A), and then use command “measure rotation”.  
<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/measure.html#rotation>

There are various different ways to superimpose sets of atoms as discussed here:
<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/superposition.html>

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 Nov 20, 2016, at 2:30 PM, chemocev marker <jirivitali at gmail.com> wrote:
> 
> Hi All
> I am interested to measure the symmetry axis of individual sub-unit (chain A & chain B) along with the symmetry axis of the heterodimer (AB). Each chain has 2 domains and 2 fold rotations axis, and I can measure by removing 1 chain and measure for the other. Is there way to measure the inter-domain symmetry axis of the heterodimer molecule.
> best
> Jiri




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