[Chimera-users] Coloring map by curvature

Joel Meyerson meyersonj at mail.nih.gov
Tue Jan 28 18:08:56 PST 2014

Hi Tom,
I have cryo-EM maps for two conformations of a protein, both in the 15
Angstrom resolution range. The conformations are visibly different, but I
am also interested in seeing where they differ in terms of their surface
curvature, as it could have bearing on how I interpret the conformations.
If there's any other info I can provide just let me know.

On Tue, Jan 28, 2014 at 7:36 PM, Tom Goddard <goddard at sonic.net> wrote:

> Hi Joel,
>   No, Chimera does not compute surface curvature.  It would not be too
> hard to make a Python script that computed it and used it to color a
> surface.  The main trouble is defining numerically the curvature for a
> triangulated surface at each vertex.  Why are you interested in this?  Is
> the idea to simulate ambient occlusion lighting where surface cavities are
> dark and projections are brighter?  Is the idea to try it on EM maps or
> molecular surfaces?
>         Tom
> On Jan 28, 2014, at 2:29 PM, Joel Meyerson wrote:
> > Hi,
> > Is it possible to color a map based on surface curvature?
> > Thanks,
> > Joel
> > _______________________________________________
> > Chimera-users mailing list
> > Chimera-users at cgl.ucsf.edu
> > http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users
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