Protein Phosphatase 1, Regulatory (Inhibitor) Subunit 1B (PPP1R1B) (AA 70-181) antibody
|Synonyms||Darpp32, AU040756, DARPP-32, DARPP32, FLJ20940, Darpp-32, darpp32, darpp-32, PPP1R1B, MGC139723|
Alternatives Western Blotting (WB), Immunofluorescence (IF)
|5 references available|
|Quantity||50 µg (250 µg/ml)|
|Price||Product not available in this region.|
|Cross-Reactivity||Rat (Rattus), Mouse (Murine)|
|Description||Dopaminergic signaling in midbrain neurons is essential to multiple brain functions and involves the activation of dopamine receptors,nsuch as D1 and D2, which regulate the phosphorylation state of DARPP-32 (dopamine and cyclic AMP-regulated phospho-protein of Mr = 32,000). D1 receptor ligation causes activation of PKA and phosphorylation of DARPP-32 at Thr-34, which converts DARPP-32 to a potent inhibitor of protein phosphatase 1 (PP1). In addition, DARPP-32 is converted to an inhibitor of PKA via phosphorylation at Thr-75 by cyclin-dependent kinase 5 (Cdk5). D2 receptor ligation inhibits PKA and activates protein phosphatase 2B/calcineurin causing dephosphorylation of DARPP-32. The major function of DARPP-32 may be to inhibit the activity of PP1, which controls the phosphorylation state of neurotransmitter receptors, ion channels, ion pumps, and transcription factors. DARPP-32 -/- mice are defective in the physiologicial and behavioral responses to dopamine. Thus, DARPP-32, a bifunctional signal transduction molecule that differentially controls a Ser/Thr kinase and a Ser/Thr phosphatase, is a critical element of dopaminergic neurotransmission and normal brain function.|
1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2. Please refer to us for technical protocols.
3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
4. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
|Molecular Weight||32 kDa|
|Purification||Purified from tissue culture supernatant or ascites by affinity chromatography.|
|Buffer||Aqueous buffered solution containing BSA, glycerol.|
|Preservative||0.09% Sodium azide.|
|Storage||Store undiluted at -20°C.|
|Restrictions||For Research Use only|
|Western blot analysis of DARPP-32 on rat brain lysate. Lane 1:250, lane 2: 1:500, lane 3: 1:1000 dilution of DARPP-32 . anti-Protein Phosphatase 1, Regulatory (Inhibitor) Subunit 1B (PPP1R1B) (AA 70-181) antibody (Image 2)|
Kurihara, Lewis, Eisler et al.: "Cloning of cDNA for DARPP-32, a dopamine- and cyclic AMP-regulated neuronal phosphoprotein." in: The Journal of neuroscience : the official journal of the Society for Neuroscience, Vol. 8, Issue 2, pp. 508-17, 1988 (PubMed).
Fienberg, Hiroi, Mermelstein et al.: "DARPP-32: regulator of the efficacy of dopaminergic neurotransmission." in: Science (New York, N.Y.), Vol. 281, Issue 5378, pp. 838-42, 1998 (PubMed).
Yan, Hsieh-Wilson, Feng et al.: "Protein phosphatase 1 modulation of neostriatal AMPA channels: regulation by DARPP-32 and spinophilin." in: Nature neuroscience, Vol. 2, Issue 1, pp. 13-7, 1999 (PubMed).
Yan, Feng, Fienberg et al.: "D(2) dopamine receptors induce mitogen-activated protein kinase and cAMP response element-binding protein phosphorylation in neurons." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 96, Issue 20, pp. 11607-12, 1999 (PubMed).
Bibb, Snyder, Nishi et al.: "Phosphorylation of DARPP-32 by Cdk5 modulates dopamine signalling in neurons." in: Nature, Vol. 402, Issue 6762, pp. 669-71, 2000 (PubMed).