A) actinin
B) troponin
C) myosin
D) actin
Correct Answer: C
Solution :
During muscular contraction myosin cross bridges heads. Myosin is not only an actin binding protein. It is also an ATPase (an enzyme) which is activated by\[C{{a}^{2+}}\]and\[M{{g}^{2+}}\]ions. Hence, ATPase enzyme is located in myosin.
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