Technical Data
Phosphodiesterase 4B (PDE4B, cAMP-specific 3',5'-cyclic Phosphodiesterase 4B, DPDE4, PDE32)
PDE4B is a member of the type IV, cyclic AMP (cAMP)-specific, cyclic nucleotide phosphodiesterase (PDE) family. Enzymes of the cAMP-dependent phosphodiesterase type 4 (PDE4) family are important in hydrolyzing cAMP produced by G-protein coupled receptor (GPCR) stimulated adenylyl cyclases. Four genes (PDE4A, B, C and D) make up the PDE4 family. cAMP-dependent phosphodiesterase type B (PDE4B) family consists of four known splice variants, PDE4B1, B2, B3 and a novel 66kD PDE4B4 protein. One or more subtype variants of PDE4B are ubiquitously present in all mammalian cells. In CNS, all four PDE4B subtype variants are expressed in varying ratios and their activity is regulated in tandem with GPCRs stimulation. Some PDE4B variants are also substrate for PKA-dependent phosphorylation. Peripheral tissues exhibit differential expression of PDE4B1, B2 and B4 variants; the PDE4B4 (66kD protein) is the major PDE4B variant expressed in lungs, testis and heart. In testis PDE4B enzymes are expressed in somatic cells (Sertoli and Leydig cells) while PDE4A is localized in germ cells.

Suitable for use in ELISA, Western Blot and Immunohistochemistry. Other applications not tested.

Recommended Dilution:
ELISA: 1:8000
Western Blot: 1:8000 & 0.5-1ug/ml
Immunohistochemistry (Formalin fixed paraffin embedded): 5ug/ml
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
PabIgGAffinity Purified
50ug-20CBlue IceHumanGoat
Synthetic peptide corresponding to C-DIDIATEDKSPVDT from C-terminus of human PDE4B.
Purified by immunoaffinity chromatography.
Supplied as a liquid in Tris saline, pH 7.3, 0.5% BSA, 0.02% sodium azide.
Recognizes human PDE4B. Species sequence homology: Mouse, rat.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.