Figure 2.
(A) Colored molecular surface of thymidine kinase 4TMK (as a monomer) as a function of surface area buried upon addition of water molecules in the peaks of the solvent density map. The dimerization area appears as the largest poorly solvated (red) patch. Drawn with PyMol (27) (http://pymol.sourceforge.net). (B) KcsA membrane protein: molecular surface and added water molecules at preferred hydration sites. Drawn with PyMol (27) (http://pymol.sourceforge.net). [Supplementary Figure: Radial density profile of the solvent as a function of the surface atom type (see text)].