Figure 5 in the original publication was displaced for another figure from our unpublished study with the different CYP3A4 mutant. Corrected Figure 5 is supplied below. It should be placed at p. 1416, top left corner, with this legend: Figure 5. Simultaneous fitting of three data sets for PGS binding (monitored by spin shift), the NADPH oxidation rate, and PGS hydroxylation by the F213A mutant of CYP3A4. The data are scaled to balance their contribution to the global fitting calculations as described in Materials and Methods. The fitted parameters are listed in Table 2.)
No other correction is required, all data and conclusions in this paper remain unchanged.