3â²,5â²-cyclic-AMP phosphodiesterase (EC 3.1.4.53, cAMP-specific phosphodiesterase, cAMP-specific PDE, PDE1, PDE2A, PDE2B, PDE4, PDE7, PDE8, PDEB1, PDEB2) is an enzyme with systematic name 3â²,5â²-cyclic-AMP 5â²-nucleotidohydrolase. It catalyses the following reaction
This enzyme requires Mg<sup>2+</sup> or Mn<sup>2+</sup> for activity.