Anti-DARPP-32 (Phospho-Thr34)

Dopamine and cAMP-regulated phosphoprotein of molecular weight 32 kDa (DARPP-32) is a member of the protein phosphatase inhibitor 1 family and is encoded by the PPP1R1B gene in humans. It is primarily expressed in medium spiny neurons of dopamine-innervated brain regions and is localized to the cytoplasm. DARPP-32 contains multiple phosphorylation sites that allow it to function as a central regulator and integrator of signaling cascades induced by a variety of neurotransmitters, neuropeptides, and psychostimulatory agents. It also contains a protein phosphatase 1 (PP1) binding domain. DARPP-32, when phosphorylated at the threonine in position 34 (phospho-Thr34) by PKA, is a PP1 inhibitor. Phosphorylation of DARPP-32 at Thr34 is induced by GABA in rat striatal and substantia nigra slices. Mice expressing a point mutation of Thr34 (T34A) in DARPP-32, which abolishes its phosphorylation, have reduced cocaine-induced conditioned place preference compared to wild-type mice. DARPP-32 (phospho-Thr34) levels are decreased in postmortem-derived prefrontal cortex from individuals with schizophrenia. Cayman's DARPP-32 (Phospho-Thr34) Polyclonal Antibody can be used for Western blot (WB) applications. The antibody recognizes DARPP-32 (phospho-Thr34) at approximately 32 kDa from mouse and rat samples.Immunogen: Phosphopeptide corresponding to amino acid residues surrounding the phospho-Thr34 site of rat DARPP-32. MW: ~32 kDa. Formulation: (Request formulation change), 100 µl of Affinity-purified rabbit polyclonal antibody. Storage Buffer: 10 mM HEPES, pH 7.5, with 150 mM sodium chloride, 100 µg BSA per ml, and 50% glycerol. Host: Rabbit. Applications: WB. Cross Reactivity: (+) DARPP-32 (phospho-Thr34), (-) Unphosphorylated DARPP-32.