[Chimera-users] Generating random helix

Elaine Meng meng at cgl.ucsf.edu
Wed Sep 24 12:14:10 PDT 2008

Hi Sudheer,
Not exactly - but you can build a helix and then fit it in a map.

See "Build Structure" (under Tools... Structure Editing), Add Atoms  
section, "peptide sequence":

and "Fit in Map" (under Tools... Volume Data):

You have to manually position the helix first, as the fitting will  
just find a nearby local optimum.

I believe some related tools (helixhunter etc.) distributed with EMAN  
are also integrated somehow with Chimera, although I have not used  
these myself:

I hope this helps,
Elaine C. Meng, Ph.D.                          meng at cgl.ucsf.edu
UCSF Computer Graphics Lab and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Sep 24, 2008, at 11:24 AM, <skmolugu at miners.utep.edu> wrote:
> Dear Chimera team,
> Is there any option in chimera that builds helix in a map at a  
> position that is assumed  to be a helix.
> thanks,
> sudheer

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