Physiology Cardiovascular system 9d5ab794 True about troponin: A Has 3 sub units B Troponin c binds to calcium C Troponin I binds actin and tropomyosine D All High-Yield Explanation Troponin is a complex protein: It has C,I,T sub units C binds to calcium Ref: Guyton and Hall textbook of medical physiology 12th edition, page number 89