Figure 5 - full size

 

Figure 5.
Figure 5 A ball-and-stick representation30 of the active-site residues of SPase 2-75 with the P1-P4 residues of an acylated peptide substrate (Ala-Ala-Ala-Ala) modelled into the bindings sites S1-S4. The observed positions of the methyl group (C16) and the carbonyl oxygen (O8) of the inhibitor (Fig. 4) were used as a guide.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nature (1998, 396, 186-190) copyright 1998.