Figure 2.

Superposition of the active sites of the enzymes. The catalytic residues proposed for ExoI (PDB entry 1ex1), Asp491 and Glu285 (Thongpoo et al., 2013 ▸), are shown superposed on AfβG, AoβG and AaβG (PDB entry 4iig). The structural figures were all produced using CCP4mg (McNicholas et al., 2011 ▸).