[Chimera-users] Electrostatic Potential based on Poisson-Boltzmann using APBS

[leila karami]

Dear chimera users,

I am using chimera 1.10.1.

I did following steps to obtain  Electrostatic Potential based on
 Poisson-Boltzmann using APBS:

open... pr.pdb
action... surface... show
to obtain *.dx file, I typed APBS in command line, after minutes, *.dx file
was created and surface color window was opened, I pressed color tab.

Please see the figure in following link:
https://www.dropbox.com/s/99gjecypqu910hu/apbs.png?dl=0

Why are the colors black and white in the surface, instead of blue and red?

Any help will highly appreciated.
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