Cyclic Nucleotide Phosphodiesterases, Type 2Cyclic Nucleotide Phosphodiesterases, Type 13',5'-Cyclic-AMP PhosphodiesterasesPhosphoric Diester HydrolasesCyclic Nucleotide Phosphodiesterases, Type 3Cyclic Nucleotide Phosphodiesterases, Type 4Phosphodiesterase Inhibitors3',5'-Cyclic-GMP PhosphodiesterasesCyclic Nucleotide Phosphodiesterases, Type 5Cyclic Nucleotide Phosphodiesterases, Type 7Phosphodiesterase 4 InhibitorsCyclic GMPRolipramPhosphodiesterase 3 InhibitorsPurinonesCyclic AMP4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinoneNucleotides, Cyclic1-Methyl-3-isobutylxanthinePhosphorus-Oxygen LyasesMilrinoneIsoenzymesCyclic Nucleotide Phosphodiesterases, Type 6Second Messenger SystemsPyrrolidinonesCyclic GMP-Dependent Protein KinasesQuinolonesCyclic AMP-Dependent Protein KinasesCatalytic DomainAmino Acid SequenceMolecular Sequence DataGene Expression Regulation, EnzymologicSignal TransductionIsoproterenolHydrolysisKineticsProtein Structure, TertiaryMyocytes, CardiacSequence Homology, Amino AcidBase SequenceCells, CulturedEnzyme InhibitorsBinding SitesCattleSubstrate SpecificityCloning, MolecularRNA, MessengerModels, BiologicalRats, Sprague-DawleyRecombinant ProteinsModels, MolecularCell Line