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Dear Careina, did you try APBS (http://www.poissonboltzmann.org)? It is based on the same principle as DelPhi. I think it comes automatically with pymol. I believe ccp4mg can also generate an electrostatic surface potential, and so can Coot. If APBS does not work straight out of the box, you can generate the input PDB file manually. The accuracy of these calculations, in my experience, correpsonds to creating a surface coloured red for oxygen and blue for nitrogen, though... Best, Tim On 09/22/2014 04:43 PM, Careina Edgooms wrote: > Dear all > > I wish to do some docking work between a protein structure that I have and a DNA model that I have created using the programme DelPhi. This can be done but i would also like to create an electrostatic map of the interaction. Apparently DNA and protein is to be protonated to generate this map and while this is not a problem for the protein, DelPhi does not protonate the DNA. > > Does anyone know how I could get around this problem and either get the DNA protonated or create the electrostatic map with the file that I have? > > Thanks Careina > -- Dr Tim Gruene Institut fuer anorganische Chemie Tammannstr. 4 D-37077 Goettingen GPG Key ID = A46BEE1A