background:
Phosphodiesterases (PDE, also designated cyclic nucleotide phosphodiesterase) are important for the downregulation of the intracellular level of the second messenger cyclic adenosine monophosphate (cAMP) by hydrolyzing cAMP to 5'AMP. Phosphodiesterase type 3 isoforms, PDE3A and 3B, are expressed primarily in cardiovascular tissue and adipose tissue, respectively. PDE3A, is found in myocardium and platelets and PDE3B is found in lymphocytes. The PDE7A1 (HCP1) isozyme and the PDE7A2 proteins, alternate splice products of PDE7A, are highly expressed in skeletal muscle. PDE7B is most highly expressed in pancreas. The PDE family contains proteins that serve tissue-specific roles in regulation of lipolysis, glycogenolysis, myocardial contractility, and smooth muscle relaxation.
Function:
PDE7B is a cAMP specific phosphodiesterase. The cAMP-specific phosphodiesterase type-7 (PDE7) family is comprised of 2 genes (PDE7A and PDE7B) each with multiple splice variants generated by RNA splicing and use of alternate initiation sites. PDE7B has three splice variants (PDE7B1 = 446 amino acid; PDE7B2 =359 amino acids and PDE7B3 = 459 amino acids. Both PDE7B2 ad PDE7B3 posses unique N-terminal sequences. PDE7B is expressed in various tissues including skeletal muscle, heart, lung and testis. PDE7B may be involved in the control of cAMP-mediated neural activity and cAMP metabolism in the brain.
Tissue Specificity:
Highly expressed in brain. Also expressed in heart, liver, skeletal muscle and pancreas.
Similarity:
Belongs to the cyclic nucleotide phosphodiesterase family. PDE7 subfamily.
Database links:
UniProtKB/Swiss-Prot: Q9NP56.1
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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