Figure 1 - full size

 

Figure 1.
Figure 1 (a) Ribbon diagram of the PmSOD1 dimer showing Fe ions (purple spheres) at the active sites with their ligands. At the center of the figure, Glu165 interacts across the dimer interface with the metal ligand His166. (b) Close-up of the active site of PmSOD1 shows the Fe ion (represented as a large yellow sphere) coordinated by three histidine residues, an aspartic acid residue and a water molecule. The water molecule, whose O-atom location is represented as a small red sphere, is coordinated by Gln76.

The above figure is reprinted by permission from the IUCr: Acta Crystallograph Sect F Struct Biol Cryst Commun (2006, 62, 1072-1075) copyright 2006.