Fig. 2

Crystal structure of AbOPH. a General representation of the AbOPH dimer. The two metals of the active site are represented as gray spheres. b View of overall structure of the AbOPH monomer. α helices are colored in blue, β sheets in magenta and loops in wheat color. The bimetallic center is shown as two gray spheres. Additional residues 206–209 are highlighted in red. c Active site of AbOPH. Residues are shown as sticks. The two metals are represented as gray balls and the two water molecules are shown as red spheres. The metal coordination sphere is shown as dashed line