Technical Data
DARPP32 (Dopamine and cAMP-regulated Phosphoprotein, Protein phosphatase 1 regulatory subunit 1B, PP1R1B)
Dopamine- and cAMP-Regulated Phosphoprotein, Mr 32kD (DARPP-32), also known as PPP1R1B, is a 23kD protein that anomalously migrates at about 32-35kD on SDS-PAGE. When phosphorylated at T34 by protein kinase A (PKA), DARPP-32 is a potent inhibitor of protein phosphatase 1 (PP1). Dephosphorylation of DARPP-32 at T34 is achieved primarily by the calcium-dependent activation of the phosphatase calcineurin. DARPP-32 is expressed almost exclusively in neuronal tissues, with highest levels in dopamine-innervated neurons.

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

Recommended Dilutions:
Western Blot: 1ug/ml
Immunohistochemistry (Paraffin): 8-25ug/ml detects DARPP-32 in rat corpus striatum tissue.
Optimal dilutions to be determined by the researcher.

Mouse myeloma with B cells obtained from a rat immunized with purified, E. coli-derived recombinant human DARPP-32.

Storage and Stability:
Lyophilized powder may be stored at -20C. Stable for 12 months at -20C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20C. Reconstituted product is stable for 12 months at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
MabIgG2a7H163Affinity Purified
100ug-20CBlue IceRat
~0.5mg/ml (after reconstitution)
Recombinant protein corresponding to aa51-204 of human DARPP-32 expressed in E. coli (Q94D71). Species Sequence Homology: human
Purified by Protein G affinity chromatography.
Supplied as a lyophilized powder from PBS, 5% trehalose. Reconstitute with 200ul sterile PBS.
Recognizes DARPP-32. Species Crossreactivity: mouse and rat
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.