fig1
Figure 1. A schematic representation of the mutual orientation and disposition of P-CF3 part of triethylphosphine and C-alpha (CA) atom of the Cys29 residue of cathepsin B (A). Active site of cathepsin В with the CF3 group (F atoms are colored green) (B). Cys29 is replaced with Ala29 (the surface of Cys29 is shown in mesh)
