Figure 4.
Steady-state kinetic experiment for B3GNT2-catalyzed transglycosylation.A, Michaelis–Menten plots of the initial velocities versus LacNAc concentrations for each fixed concentration of UDP-GlcNAc. The data set was globally fit to Equation 1 that describes the rapid-equilibrium random-order sequential mechanism, and the best fit is represented by the solid lines. B, Michaelis–Menten plots of the initial velocities versus UDP-GlcNAc concentrations for each fixed concentration of LacNAc. The data set was globally fit to Equation 1 that describes the rapid-equilibrium random-order sequential mechanism, and the best fit is represented by the solid lines. C, double-reciprocal plots of initial velocities versus LacNAc concentrations for each fixed concentration of UDP-GlcNAc. The solid lines show the linear regression fit. D, double-reciprocal plots of initial velocities versus UDP-GlcNAc concentrations for each fixed concentration of LacNAc. The solid lines show the linear regression fit.