関連ワード:  what is the function of actin    what is the function of actin and myosin    what is the function of actin and myosin filaments    what is the function of actin filaments    what is the function of actin in muscle contraction    what is the function of actin protein    what is the function of acting    what is the function of actin cytoskeleton    what is the function of actin in a sarcomere    what is the function of actin and myosin protein