Phosphorylation of the inhibitory subunit of troponin and its effect on the calcium dependence of cardiac myofibril adenosine triphosphatase.

Adenosine Triphosphatases/metabolism Animals Calcium/pharmacology Cattle Kinetics Molecular Weight Muscle Proteins/metabolism Myocardium/metabolism Myofibrils/drug effects,metabolism Phosphoproteins/metabolism Protein Kinases/metabolism Troponin/metabolism

Muscle Proteins Phosphoproteins Troponin Protein Kinases Adenosine Triphosphatases Calcium