[Chimera-users] commands to add red spheres to the ribbon structure

[Elaine Meng]

Hi Bin,
As far as I know, the same commands as in earlier versions should work.  However, the trick (same as before) is to use the “ribbackbone” command to allow showing backbone atoms at the same time as ribbon.  Then you can show the alpha-carbon as a red ball.  For example, commands:

open 1hd2
ribbackbone
# hide atoms
~disp
disp :57 at ca
repr sphere :57 at ca
color red,a :57 at ca

In the last command, “,a” means atoms-only (not ribbon etc.).  I hope this helps,
Elaine
----------
Elaine C. Meng, Ph.D. 
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco



> On Jul 17, 2017, at 10:00 AM, zhangbin <mumu730 at gmail.com> wrote:
> 
> Hi Chimera,
> I would like to know the commands for adding a red sphere to a certain spot in a ribbon structure of a protein (please see the attachment). The command I know worked for older version of the chimera but not this new version 0.1.
> 
> Thanks,
> Bin