[Chimera-users] Sphere radius

[Elaine Meng]

Hi,
Yes -- the spheres show atomic VDW radii, and there are several ways  
to change VDW radii.  One way is the command vdwdefine, for example:

vdwdef +0.5 C
(add 0.5 angstroms to VDW radii of carbons)
~vdwdef
(go back to default VDW radii)

Information on VDW radii in Chimera and several ways to change them:
<http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/vdwrad.html>

Note that changing the VDW radii will affect other calculations such  
as "findclash" and molecular surface generation.  It may be better to  
use the default radii for those purposes.

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 Jan 7, 2010, at 7:10 AM, Yasser Almeida Hernández wrote:

> Hi...
> Can i change the radius of the sphere atoms representation ...?
>
> Thanks
>