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The inhibitor protein of the cyclic AMP-dependent protein kinase-catalytic subunit interaction. Composition of
S M Van Patten1, A Hotz, V Kinzel
1Department of Biological Chemistry, School of Medicine, University of California, Davis 95616.
Abstract:
It has been previously demonstrated that the combination of pure preparations of the inhibitor protein of the cyclic AMP-dependent protein kinase and the catalytic subunit of this enzyme resulted in the formation of multiple complexes [Van Patten, Fletcher & Walsh (1986) J. Biol. Chem. 261, 5514-5523]. In the present study it is demonstrated that these multiple species occur because the bovine heart protein kinase preparation contains multiple forms of catalytic subunit [Kinzel, Hotz, König, Gagelmann, Pyerin, Reed, Köbler, Hofmann, Obst, Gensheimer, Goldblatt & Shaltiel (1987) Arch. Biochem. Biophys. 253, 341-349].