Troponin C, skeletal muscle (TNNC2)

Troponin is the central regulatory protein of striated muscle contraction. Tn consists of three elements: Tn-I which is the inhibitor of actomyosin ATPase, Tn-T which comprises the binding site for tropomyosin and Tn-C.

The binding of calcium to Tn-C abolishes the inhibitory action of Tn on actin filaments. .