PDE5A (Phosphodiesterase 5A): PDE5A encodes a phosphodiesterase enzyme that specifically targets cyclic GMP, a second messenger important in various biological processes. PDE5A is well-known for its role in vascular smooth muscle regulation, and inhibitors of PDE5A are used in treating erectile dysfunction and pulmonary hypertension. Research into PDE5A is significant for cardiovascular and urogenital health.


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