title: Cyclic AMP phosphodiesterase activity in three Morris hepatomas.
abstract: Rat liver cAMP phosphodiesterase has been fractionated into four peaks of activity with isoelectrofocusing column chromatography. The major two liver peaks (high Km enzymes) decreased with increasing growth rate while the minor two liver peaks (low Km enzymes) increased in one fast growing Morris hepatoma. There was also less total phosphodiesterase activity in the fast growing hepatoma.
mesh_terms: D015105:3',5'-Cyclic-AMP Phosphodiesterases / Q000302:isolation & purification / Q000378:metabolism*; D000818:Animals; D006528:Carcinoma, Hepatocellular / Q000201:enzymology*; D007525:Isoelectric Focusing; D007700:Kinetics; D008099:Liver / Q000201:enzymology; D008113:Liver Neoplasms; D009374:Neoplasms, Experimental / Q000201:enzymology; D010727:Phosphoric Diester Hydrolases / Q000378:metabolism*; D051381:Rats; D013997:Time Factors
chemical_list: D010727:Phosphoric Diester Hydrolases; D015105:3',5'-Cyclic-AMP Phosphodiesterases