disease:Defects in TNNC1 are the cause of cardiomyopathy dilated type 1Z (CMD1Z) [MIM:611879]. Dilated cardiomyopathy is a disorder characterized by ventricular dilation and impaired systolic function, resulting in congestive heart failure and arrhythmia. Patients are at risk of premature death.,function:Troponin is the central regulatory protein of striated muscle contraction. Tn consists of three components: Tn-I which is the inhibitor of actomyosin ATPase, Tn-T which contains the binding site for tropomyosin and Tn-C. The binding of calcium to Tn-C abolishes the inhibitory action of Tn on actin filaments.,miscellaneous:Cardiac muscle Tn-C can bind 3 calcium ions per molecule. Domain I does not bind calcium.,similarity:Belongs to the troponin C family.,similarity:Contains 4 EF-hand domains.,
nucleoplasm,mitochondrion,cytosol,troponin complex,actin cytoskeleton,contractile fiber,