Partha, Sorry, but PyMOL's built-in potential calculation is qualitative -- if you care about the actual units, then you should be using APBS instead. Cheers, Warren
________________________________ From: CCP4 bulletin board [mailto:ccp...@jiscmail.ac.uk] On Behalf Of Parthasarathy Sampathkumar Sent: Monday, November 02, 2009 3:43 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Unit of electrostatic potential in PyMol Dear All, I used PyMol to generate a qualitative Vacum Electrostatic surface (without APBS calculations). Positve and negative potentials are displayed in the range 56.3 to -56.3. What is the units of these numbers? Thank you, -Partha