after pulse-labeling with [ 3h ] leucine for 8 min , specific activity of the myosin heavy chain in the easily releasable myofilaments is 3-6 times higher than the specific activity of myosin heavy chain in the residual myofibrils , although 85-90 % of total label is in the myofibrillar myosin .
C0027100
myosin heavy chain
C0027096
myosin