AHP897 is specific for rat DARPP-32, when phosphorylated at threonine 34.
DARPP-32 (also known as protein phosphatase 1 regulatory subunit 1B PP1R1B) is a dopamine- and cAMP-regulated phosphoprotein, which is principally expressed in striatal medium spiny neurons, and is thought to play a critical role in the regulation of dopaminergic neurotransmission.
DARPP-32 can act either as a phosphatase inhibitor or as a kinase inhibitor, depending on its relative state of phosphorylation . Phosphorylation at threonine 34 converts DARPP-32 into an inhibitor of protein phosphatase-1 (PP-1) whilst phosphorylation at threonine 75 switches the protein to an inhibitor of protein kinase A (PKA) .
Species Cross-Reactivity
Target Species
Cross Reactivity
Bovine
Expected from Sequence
Chicken
Expected from Sequence
Dog
Expected from Sequence
Human
Expected from Sequence
Monkey
Expected from Sequence
Mouse
Expected from Sequence
Application
This product has been reported to work in the following applications. This information is derived from testing within our laboratories, peer-reviewed publications or personal communications from the originators. Please refer to references indicated for further information. For general protocol recommendations, please visitwww.abdserotec.com/protocols.
Application Name
Yes
No
Not Determined
Suggested Dilution
ELISA
Flow Cytometry
Immunohistology - Frozen
Immunohistology - Paraffin
Immunoprecipitation
Western Blotting(1)
1/1000
(1)
For the detection of phosphoproteins, threonine phosphatase inhibitors such as 10mM Sodium Fluoride should be added to the sample buffer. Milk or other casein-based blocking solutions are not recommended as casein is a phosphoprotein and its use can result in high background.
Where this antibody has not been tested for use in a particular technique this does not necessarily exclude its use in such procedures. Suggested working dilutions are given as a guide only. It is recommended that the user titrates the antibody for use in their own system using appropriate negative/positive controls.
Western Blotting
AHP897 detects a band of approximately 32kDa in rat caudate lysates.
Storage
Store at +4oC or at -20oC if preferred.
Storage in frost-free freezers is not recommended.
This product should be stored undiluted.
Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use.
Shelf Life
12 months from date of despatch.
Antiserum Preparation
Antisera to phosphorylated rat DARPP-32 were raised by repeated immunisations of rabbits with highly purified antigen.
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