Hi Nikolay, This post from the Chimera mailing list describes how to find the atoms that touch the molecular surface. http://plato.cgl.ucsf.edu/pipermail/chimera-users/2006-February/000702.html The surface doesn't have charge associated with it. I guess you mean the electrostatic potential at a point on the surface. Here's a Chimera mailing list message about how to do that. http://plato.cgl.ucsf.edu/pipermail/chimera-users/2011-February/006000.html The Chimera documentation web page http://www.cgl.ucsf.edu/chimera/docindex.html has an entry for searching the mailing list which allowed me to find these two messages by searching for atoms at surface and potential at surface point. Tom

Hi all,

I was wondering if any of you knew of a way to determine exactly what atoms occur on the surface of a molecule or how to get the exact charge at a point on a surface.

Thank you,

Nikolay Rodionov

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