Description
Product Usage Information
Western Blotting: 1:1000
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at -20°C. Do not aliquot the antibody.
Protocol
Available protocols: Western Blotting
Specificity / Sensitivity
Phospho-DARPP-32 (Thr34) (D27A4) Rabbit Monoclonal Antibody detects endogenous levels of DARPP-32 only when phosphorylated at Thr34.
Species Reactivity: Human
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Thr34 of human DARPP-32 protein.
Background
DARPP-32 (dopamine and cyclic AMP-regulated phosphoprotein, relative molecular mass 32,000) is a cytosolic protein highly enriched in medium-sized spiny neurons of the neostriatum (1). It is a bifunctional signaling molecule that controls serine/threonine kinase and serine/threonine phosphatase activity (2). Dopamine stimulates phosphorylation of DARPP-32 through D1 receptors and activation of PKA. PKA phosphorylation of DARPP-32 at Thr34 converts it into an inhibitor of protein phosphatase 1 (1). DARPP-32 is converted into an inhibitor of PKA when phosphorylated at Thr75 by cyclin-dependent kinase 5 (CDK5) (2). Mice containing a targeted deletion of the DARPP-32 gene exhibit an altered biochemical, electrophysiological, and behavioral phenotype (3).
Alternate Names
DARPP-32; DARPP32; dopamine and cAMP regulated phosphoprotein; dopamine and cAMP-regulated neuronal phosphoprotein 32; Dopamine- and cAMP-regulated neuronal phosphoprotein; FLJ20940; PPP1R1B; PPR1B; protein phosphatase 1 regulatory inhibitor subunit 1B; Protein phosphatase 1 regulatory subunit 1B; protein phosphatase 1, regulatory (inhibitor) subunit 1B; protein phosphatase 1, regulatory (inhibitor) subunit 1B (dopamine and cAMP regulated phosphoprotein, DARPP-32)
