Figure 2:

XAS analysis of PaΔZntA_121–740–M²⁺. K-edge experimental EXAFS data (black line) and best fits (red line) with the corresponding Fourier transforms for ΔZntA_121–740–Zn²⁺ (A,B), ΔZntA_121–740–Cd²⁺ (C,D), and L3-edge EXAFS data for ΔZntA_121–740–Pb²⁺ (E,F) and ΔZntA_121–740–Hg²⁺ (G,H; see Materials and Methods). The parameters for the best fits are listed in Table 1. (I) Models of the metal binding sites in PaΔZntA_121–740–Zn²⁺, PaΔZntA_121–740–Cd²⁺, PaΔZntA_121–740–Hg²⁺ and PaΔZntA_121–740–Pb²⁺ with the coordination geometries and metal-ligand bond distances.