PDE1 refers to a specific family of enzymes known as phosphodiesterases, specifically phosphodiesterase type 1. These enzymes play a crucial role in cellular signaling by hydrolyzing cyclic nucleotides, such as cyclic AMP (cAMP) and cyclic GMP (cGMP), into their inactive forms. As a result, PDE1 helps regulate the levels of these important signaling molecules, influencing various physiological processes including vasodilation, neurotransmission, and muscle contraction.
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