From: Leonardo Trabuco (
Date: Thu Jul 19 2007 - 15:35:27 CDT

Dear Insight II:

On Thu, Jul 19, 2007 at 04:09:17PM -0400, Insight II wrote:
> Hi, all:
> I have a question on the unit for the color scale data range, i am
> drawing electrostatic potential surface in VMD using RWB colors, and
> found that "A good initial range for APBS potential data is -10 to
> 10. If you prefer more intense colors, you can set the range lower, to
> something like -4 to 4." i am wondering what unit is it for the color
> scale range when applied to elecstatic potential.

The unit is kT/e, with T=298.15.

> and what range do most papers select?

That largely depends of the system you are working on.


Leonardo Trabuco, Ph.D. student
Theoretical and Computational Biophysics Group
University of Illinois at Urbana-Champaign