- Phosphodiesterase 4D, cAMP Specific (PDE4D)
- Phosphodiesterase 5A, cGMP Specific (PDE5A)
- Phosphodiesterase 6A, cGMP Specific (PDE6A)
- Phosphodiesterase 6B, cGMP Specific (PDE6B)
- Phosphodiesterase 6C, cGMP Specific (PDE6C)
- Phosphodiesterase 6D, cGMP Specific (PDE6D)
- Phosphodiesterase 6G, cGMP Specific (PDE6G)
- Phosphodiesterase 6H, cGMP Specific (PDE6H)
- Phosphodiesterase 7A (PDE7A)
- Phosphodiesterase 8A (PDE8A)
- Phosphodiesterase 8B (PDE8B)
- Phosphodiesterase 9A (PDE9A)
- Phosphodiesterase 10A (PDE10A)
- Phosphodiesterase 11A (PDE11A)
- Phosphodiesterase 12 (PDE12)
