High affinity cGMP-specific 3',5'-cyclic phosphodiesterase 9A is an enzyme that in humans is encoded by the PDE9Agene.[1][2]
The protein encoded by this gene catalyzes the hydrolysis of cAMP and cGMP to their corresponding monophosphates. The encoded protein plays a role in signal transduction by regulating the intracellular concentration of these cyclic nucleotides. Multiple transcript variants encoding several different isoforms have been found for this gene.[2]
↑Fisher DA, Smith JF, Pillar JS, St Denis SH, Cheng JB (Jul 1998). "Isolation and characterization of PDE9A, a novel human cGMP-specific phosphodiesterase". J Biol Chem. 273 (25): 15559–64. doi:10.1074/jbc.273.25.15559. PMID9624146.
↑Verhoest PR, Fonseca KR, Hou X, et al. (2012). "Design and discovery of 6-[(3S,4S)-4-methyl-1-(pyrimidin-2-ylmethyl)pyrrolidin-3-yl]-1-(tetrahydro-2H-pyran-4-yl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one (PF-04447943), a selective brain penetrant PDE9A inhibitor for the treatment of cognitive disorders". J. Med. Chem. 55 (21): 9045–54. doi:10.1021/jm3007799. PMID22780914.
↑Hutson PH, Finger EN, Magliaro BC, et al. (2011). "The selective phosphodiesterase 9 (PDE9) inhibitor PF-04447943 (6-[(3S,4S)-4-methyl-1-(pyrimidin-2-ylmethyl)pyrrolidin-3-yl]-1-(tetrahydro-2H-pyran-4-yl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one) enhances synaptic plasticity and cognitive function in rodents". Neuropharmacology. 61 (4): 665–76. doi:10.1016/j.neuropharm.2011.05.009. PMID21619887.
Further reading
Guipponi M, Scott HS, Kudoh J, et al. (1998). "Identification and characterization of a novel cyclic nucleotide phosphodiesterase gene (PDE9A) that maps to 21q22.3: alternative splicing of mRNA transcripts, genomic structure and sequence". Hum. Genet. 103 (4): 386–92. doi:10.1007/s004390050838. PMID9856478.
Hattori M, Fujiyama A, Taylor TD, et al. (2000). "The DNA sequence of human chromosome 21". Nature. 405 (6784): 311–9. doi:10.1038/35012518. PMID10830953.
Rentero C, Monfort A, Puigdomènech P (2003). "Identification and distribution of different mRNA variants produced by differential splicing in the human phosphodiesterase 9A gene". Biochem. Biophys. Res. Commun. 301 (3): 686–92. doi:10.1016/S0006-291X(03)00021-4. PMID12565835.
Wang P, Wu P, Egan RW, Billah MM (2003). "Identification and characterization of a new human type 9 cGMP-specific phosphodiesterase splice variant (PDE9A5). Differential tissue distribution and subcellular localization of PDE9A variants". Gene. 314: 15–27. doi:10.1016/S0378-1119(03)00733-9. PMID14527714.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.
Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. doi:10.1038/nature04209. PMID16189514.
