Catecholamine and Dibutyryl Cyclic AMP Effects on Myosin Adenosine Triphosphatase in Cultured Rat Heart Cells

Science  14 Sep 1973:
Vol. 181, Issue 4104, pp. 1061-1063
DOI: 10.1126/science.181.4104.1061


Catecholamines and dibutyryl adenosine 3', 5'-monophosphate (dibutyryl cyclic AMP) increase the activity of myosin adenosine triphosphatase in cultured rat heart cells. Dichloroisoproterenol, an inhibitor of the beta receptor of the catecholamines, inhibits the action of the catecholamines but not of cyclic AMP.