[Chimera-users] CSG of a kind

[Elaine Meng]

Hi Lothar,
In Chimera, it is command "vop zone" with invert true:

<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/vop.html#zone>

ChimeraX also has this feature, as "volume zone" (with invert true, newMap true):

<http://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#zone>

I hope this helps,
Elaine
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Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Apr 13, 2020, at 2:58 PM, Esser, Lothar (NIH/NCI) [E] <esserlo at mail.nih.gov> wrote:
> 
> Hi,  
>   I am sure this is possible I just could not find it in the documentation: Can someone quickly remind me how to subtract density that surrounds a molecule so as to leave the extra density in the map ? Volume eraser seems to use a sphere but this is too crude. 
> I am interested in an extra domain that is not (yet) in my model and it would help to remove the portion that I know from the density. There is probably a very simple solution that I just can’t seem to find. 
> Thanks, 
> Lothar