ADP Phosphocreatine Phosphotransferase
A Transferase that catalyzes formation of Phosphocreatine from ATP + Creatine. The reaction stores ATP energy as Phosphocreatine. Three cytoplasmic Isoenzymes have been identified in Human Tissues: the MM type from Skeletal Muscle, the MB type from myocardial Tissue and the BB type from nervous Tissue as well as a mitochondrial isoenzyme. Macro-Creatine Kinase refers to Creatine Kinase complexed with other Serum Proteins.