Fig. 5: Stimulation of the steady-state ATPase activity of wild-type CCT/TRiC and the double mutant by α-lactalbumin.

Initial velocities of ATP hydrolysis by the tagged wild-type CCT/TRiC and the double mutant were measured as a function of α-lactalbumin concentration at a fixed ATP concentration of 300 μM. The final oligomer concentration of CCT/TRiC was 20 nM. The data for each variant were normalized by its steady-state ATPase activity in the absence of α-lactalbumin. See Materials and Methods for more details. Error bars represent standard errors.