Increased phosphorylation in vitro of a cytosolic polypeptide resolved from denervated skeletal muscle.

Autor: Squinto, Stephen, McLane, Jerry, Held, Irene
Zdroj: Neurochemical Research; Feb1981, Vol. 6 Issue 2, p203-211, 9p
Abstrakt: The in vitro phosphorylation of a 40,400-dalton, cytosolic polypeptide from the soleus muscle of the rat is increased twofold within 24 hr after cutting the motor nerve fibers to this muscle. This involves an ATP:phosphotransferase reaction which we have reported to be inhibited by a specific cyclic AMP-dependent protein kinase inhibitor. The phosphorylated polypeptide does not electrophoretically comigrate on SDS-polyacrylamide gels with the 38,000-dalton catalytic subunit of cyclic AMP-dependent protein kinase which is known to undergo a site-specific autophosphorylation in skeletal muscle. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index