PDE8B Antibody – Rabbit Polyclonal

The protein encoded by this gene is a cyclic nucleotide phosphodiesterase (PDE) that catalyzes the hydrolysis of the second messenger cAMP. The encoded protein, which does not hydrolyze cGMP, is resistant to several PDE inhibitors. Defects in this gene are a cause of autosomal dominant striatal degeneration (ADSD). Several transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jul 2010]

PDE8B: Hydrolyzes the second messenger cAMP, which is a key regulator of many important physiological processes. May be involved in specific signaling in the thyroid gland. Defects in PDE8B are the cause of striatal degeneration autosomal dominant (ADSD). It is a movement disorder affecting the striatal part of the basal ganglia and characterized by bradykinesia, dysarthria and muscle rigidity. These symptoms resemble idiopathic Parkinson disease, but tremor is not present. Defects in PDE8B are the cause of primary pigmented nodular adrenocortical disease type 3 (PPNAD3). PPNAD3 is a rare bilateral adrenal defect causing ACTH-independent Cushing syndrome. Macroscopic appearance of the adrenals is characteristic with small pigmented micronodules observed in the cortex. Adrenal glands show overall normal size and weight, and multiple small yellow-to-dark brown nodules surrounded by a cortex with a uniform appearance. Microscopically, there are moderate diffuse cortical hyperplasia with mostly nonpigmented nodules, multiple capsular deficits and massive circumscribed and infiltrating extra-adrenal cortical excrescences with micronodules. Clinical manifestations of Cushing syndrome include facial and trunkal obesity, abdominal striae, muscular weakness, osteoporosis, arterial hypertension, diabetes. Belongs to the cyclic nucleotide phosphodiesterase family. PDE8 subfamily. 6 isoforms of the human protein are produced by alternative splicing.

Protein type: EC 3.1.4.53; Nucleotide Metabolism - purine; Phosphodiesterase

Chromosomal Location of Human Ortholog: 5q13.3

Cellular Component: cytosol

Molecular Function: 3',5'-cyclic-AMP phosphodiesterase activity; signal transducer activity; metal ion binding; 3',5'-cyclic-nucleotide phosphodiesterase activity

Biological Process: behavioral fear response; cyclic nucleotide metabolic process; operant conditioning; cAMP catabolic process; two-component signal transduction system (phosphorelay); visual learning; neuromuscular process controlling balance; negative regulation of insulin secretion

Disease: Striatal Degeneration, Autosomal Dominant; Pigmented Nodular Adrenocortical Disease, Primary, 3