Figure 1.
Examples of the three major classes of copper-binding sites in proteins. The structures were drawn using the structure coordinates from PDB files for the type 1 copper center of amicyanin from Paracoccus denitrificans (PDB code 2OV0), the type 2 copper center of Cu,Zn-superoxide dismutase from human bovine erythrocytes (PDB code 2SOD) and the type 3 copper center of hemocyanin from Octopus dofleini (PDB code 1JS8). The structures are presented as sticks colored gray for carbon, red for oxygen, blue for nitrogen and yellow for sulfur. The copper is displayed as a dark blue sphere.
