Figure 2.
Initial Rate plots for IucA, varying concentrations of one substrate at fixed concentrations of the remaining two substrates at a constant ratio relative to their respective KM values. A. Citrate concentration was varied at multiple concentrations of ATP and ahLys. B. ATP concentration was varied at multiple concentrations of citrate and ahLys. C. ahLys concentration was varied at multiple concentrations of ATP and citrate. Double reciprocal plots were created illustrating intersecting patterns for all three substrates. Reprinted with permission from Mydy, L. S., D. C. Bailey, K. D. Patel, M. R. Rice and A. M. Gulick (2020). βThe Siderophore Synthetase IucA of the Aerobactin Biosynthetic Pathway Uses an Ordered Mechanism.β Biochemistry 59: 2143β2153. Copyright 2020 American Chemical Society.