(ONE-HEADED) MYOSIN Ic KINETICS

ATP-Induced Dissociation of MyoIc from Actin

PIs: M. Arsenault, M. Ostap, Y. E. Goldman , and H. H. Bau

Understanding Myosin motors kinetics is necessary for understanding their function, the design of single molecule experiments, and the design of motor-based devices.

Stopped flow kinetic measurements of one-headed myosin Ic motor bound to actin filament were carried out to determine the ATP-binding rate and the motor’s affinity to ADP.

Slow kinetics (slow dissociation rate)
Strong affinity to ADP

Effect of ADP on Increasing Amplitude of Slow Phase