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Superposition of the subunit interface in KshAMtb and KshAMtb·ADD. The mononuclear iron, its ligands, and the bridging Asp-178, at left, are in one subunit. The Rieske center and its ligands, at right, are in the neighboring subunit. KshAMtb and KshAMtb:ADD are in gray and cyan, respectively. The iron ions of KshAMtb·ADD and KshAMtb are brown and orange spheres, respectively. Sulfur atoms are represented by yellow spheres. Figure was generated using PyMOL (50) and PDB code 2ZYL (13).
