title: cAMP-dependent protein kinase II interactions with nuclei derived from rat mammary tumor.
abstract: cAMP-dependent protein kinase from bovine heart exhibited significant interactions with nuclei from rat mammary tumors. These enzyme-nuclear interactions occurred when the intact holoenzyme was preincubated with 10 nM cAMP, 1 mM MgATP at 24 degrees C to produce high-affinity monophasic cAMP-dissociation kinetics. The enzyme-nuclear interactions are correlated with the loss of cAMP and PO4 from the purified enzyme. The data indicate that the high affinity cAMP-dependent protein kinase II exhibits significant nuclear interaction which may be related to cAMP function in rat mammary tumors.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002417:Cattle; D002467:Cell Nucleus / Q000378:metabolism*; D007700:Kinetics; D008325:Mammary Neoplasms, Experimental / Q000648:ultrastructure; D009206:Myocardium / Q000201:enzymology; D011494:Protein Kinases / Q000378:metabolism*; D051381:Rats
chemical_list: D000255:Adenosine Triphosphate; D011494:Protein Kinases