Figure 4. Kinetic analysis of TDPX1.
Representative data are shown for cumene hydroperoxide and kinetic parameters for this and other substrates are reported in Table 2. TryX was fixed at 0.5 μM (open circle), 1 μM (filled circle), 2 μM (open square), 3 μM (filled square) or 5 μM (open triangle) and cumene hydroperoxide concentrations were varied (50-1000 μM). Initial velocities were determined and globally fitted by non-linear regression to an equation describing a ping-pong mechanism (see “experimental procedures for further details). (A) Double reciprocal transformation of primary data showing the best fit. (B) Secondary plot of the intercepts of the primary plot A versus the reciprocal TryX concentrations.