Here’s an image of your structure and dx map in Chimera, with status line showing the 4 values. The ESP value is given as “nan”, meaning there is nothing useful in the map file because it was calculated without charges.

Elaine

On Jul 17, 2015, at 1:11 PM, leila karami <karami.leila1@gmail.com> wrote:

Dear Elaine,

1) "report values" gives only 3 values (x coord, y coord, z coord) and not 4 values.

2) Based on your suggestion, I did following steps:

Tools... structure Editing... pdb2pqr

But I encountered with:

Service 'opal:pdb2pqr_1.8' is unavailable.

3) Again, I tried the apbs in command line.

To have my dx and the PDB files, please check the following links:

https://www.dropbox.com/s/n4zv0lq7s4p1pz2/44.pdb?dl=0
https://www.dropbox.com/s/w6dg4adb498178r/tmpiwv0lf.dx?dl=0

Again, electrostatic surface is as black and white instead of red and blue.

Thanks in advance,
Leila
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