Kincaid, R L Effects of spermine on activity and stability of calcium-dependent guanosine 3',5'-monophosphate phosphodiesterase. [electronic resource] - The Journal of biological chemistry Jun 1979 - 4970-3 p. digital Publication Type: Journal Article ISSN: 0021-9258 Subjects--Topical Terms: 3',5'-Cyclic-GMP Phosphodiesterases--metabolismAnimalsBrain--enzymologyCalcium--pharmacologyCattleDrug StabilityEnzyme ActivationKineticsMagnesium--pharmacologyPutrescine--pharmacologySpermidine--pharmacologySpermine--pharmacology