Figure 2.
(A) Site 1 metal binding residues (E24, H42, H108, and H112) with weighted 2mFo-DFc map contoured at 1.5σ. (B) Site 2 metal binding residues (C30, E41, and E107) and coordinating water molecule with electron density contoured at 1.5σ. (C) Putative hydrogen-bonding network connecting site 1 to the DNA recognition helix, α4. Metal coordinating side chains are represented as sticks and hydrogen-bonding network residues are highlighted in yellow.