Figure 3

Reversibility of PPI binding to DDAH1. Measurement of DDAH1 activity is expressed as percentage of control activity (incubation with no PPI). Each data point represents the mean of two sets of triplicate experiments (10-fold PPI dilution) or one triplicate experiment (no PPI dilution). Error bars indicate the standard deviation. *P < 0.05; **P < 0.01.