Figure 2.
Representative structures of the high-affinity metal-binding sites after energy minimization and MD simulation studies. High-affinity site with either (a) Ni2+ or (b) K+ after energy minimization. Metal–ligand distances are shown in Å. (c) Average structure from MD simulation of high-affinity site containing K+. Coloring is the same as in Figure 1. Water molecules are represented as red spheres.