Kinesin-1 motors can move long distances on microtubule tracks without dissociating. by contrast, myosin ii motors in skeletal muscle take only one or a few steps before letting go. what is most likely the difference between these two motors that allow two different types of movement?
o differences in length of the stalk of each respective motor allow for differences in step size.
o differences in atp versus gtp hydrolysis alter the motor head movement along filaments.
o actin filaments are smaller in diameter and have less space for movement.
o binding affinity of the kinesin-1 motor head to microtubules is high, whereas binding affinity of the myosin ii motor head to actin filaments is low.
o microtubules are larger in diameter and have more space for movement.