Molecular mechanism by which cyclic amp regulates myocardial contractility [electronic resource].
Published
Rochester, N.Y. : University of Rochester. Department of Radiation Biology and Biophysics, 1979. Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
From these experiments, it appears that the phosphorylated 22,000 dalton protein does not regulate the transport properties of the ATPase. Instead phosphorylation of the 22,000 dalton protein causes it to become buried in the membrane, transporting Ca/sup 2 +/ into the sarcoplasmic reticulum and thereby, elevating the Ca/sup 2 +/ concentration in the sarcoplasmic reticulum available for release to the myofibrils.