Dear Constance,
your question means that you want to know the so-called quantile rank corresponding to the cut-off levels you have chosen (see the article in Acta Cryst D, D70, 2593-2606 (2014) that is talking specially about this).
To rescale from sigma's into percentile ranks, you may use either the corresponding phenix option (map comparison) or using a separate python program that I will send you by a separate mail, out of bb.
With best wishes,
Sacha
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De : CCP4 bulletin board [[log in to unmask]] de la part de Constance Jeffery [[log in to unmask]]
Envoyé : dimanche 30 novembre 2014 21:26
À : [log in to unmask]
Objet : [ccp4bb] Fwd: question about calculating electrostatic potentials
Dear CCP4 users,
I have a question about protein electrostatic surfaces. We used Pymol to calculate electrostatic surfaces of several protein structures. Is there a way to calculate the percent of surface that is red, or the area of surface that is red, so that we can quantitatively compare these structures?
Thanks,
Connie
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