title: Characterization of two forms of beef heart cyclic nucleotide phosphodiesterase.
mesh_terms: D000241:Adenosine; D000619:Aminohydrolases; D000645:Ammonium Sulfate; D000818:Animals; D002417:Cattle; D011232:Chemical Precipitation; D002848:Chromatography, DEAE-Cellulose; D002850:Chromatography, Gel; D000242:Cyclic AMP; D006152:Cyclic GMP; D004589:Electrophoresis, Disc; D007700:Kinetics; D008970:Molecular Weight; D009206:Myocardium / Q000201:enzymology*; D009708:Nucleotidases; D009711:Nucleotides; D010726:Phosphodiesterase Inhibitors; D010727:Phosphoric Diester Hydrolases / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship; D013806:Theophylline; D014316:Tritium; D014461:Ultracentrifugation
chemical_list: D009711:Nucleotides; D010726:Phosphodiesterase Inhibitors; D014316:Tritium; D013806:Theophylline; D000242:Cyclic AMP; D009708:Nucleotidases; D010727:Phosphoric Diester Hydrolases; D000619:Aminohydrolases; D006152:Cyclic GMP; D000241:Adenosine; D000645:Ammonium Sulfate