To Which Contractile Protein Does Calcium Bind

Question

To which contractile protein does calcium bind?
A) Troponin
B) Tropomyosin
C) Actin
D) Thick filament

Accepted Answer

Calcium binds to Troponin, which initiates the movement of Tropomyosin, allowing the binding of Myosin to Actin to cause muscle contraction.