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Comparison of the size of the active site cavities of (a) modeled His3 site using the structure of [AsIII]S(CSL9C)3 (PDB 2JGO)[68] and (b) the actual structure containing the His3 site, [HgII]S[ZnII(OH2/OH−)]N(CSL9PenL23H)3 n+ (PDB 3PBJ) [70]. (c) Overlay of the two sites with the model in gray and the actual structure in cyan.
