Anti-PP2A-B′ (B56) Antibody

PP2A is a heterotrimeric type 2 Ser/Thr phosphatase, composed of a structural subunit (A), a regulatory subunit (B), and a catalytic subunit (C). The structural A and catalytic C subunits form the constitutive core of the enzyme, which associates with one of a large number of regulatory B subunits. There are multiple isotypes (encoded by distinct genes) of the B subunit, grouped into three families: B/PR55, B′/PR61, and B′′/PR72 . The prototypical B (or PR55) family of subunits is encoded by three genes, Balpha, Bbeta and Bgamma . The B′ (or B56) family consists of at least seven splice variants derived from five genes. RNA′s for the two members of the B′′ family, PR72 and PR130, arise by alternative splicing or use of alternate transcription start sites from the same gene. Primary structures as well as functions of B and B′ subunits are conserved from yeast to mammals. PTPA is a member of the B′ family that is required for activation of PP2A by an undefined mechanism. PP2A is distinguishable from PP2B/Calcineurin and PP2C by its partial activity in the absence of divalent cations, and its high sensitivity to Okadaic Acid. It is also thought to be the principal downmodulator of Ser/Thr kinase cascades.

This antibody is specific to PP2A-B’ subunits.

Epitope: Internal

The immunogen used for the purified peptide conjugated to KLH corresponds to the sequence NH2-Val-Ser-Ser-Pro-His-Phe-Gln-Val-Ala-Glu- Arg-Ala-Leu-Tyr-COOH.

Detect PP2A-B’ (B56) using this Anti-PP2A-B’ (B56) Antibody validated for use in WB.

Research Category
Signaling

Research Sub Category
PI3K, Akt, & mTOR Signaling

Kinases & Phosphatases

Routinely evaluated by Western Blot on HeLa lysates.

Western Blot Analysis: 1:500-1:1,500 dilution of this antibody detected PP2A-B′ (B56) in 10 μg of multiple cell lysates.

~56 kDa

Replaces: AB4088

Purified

Format: Purified

Purified rabbit polyclonal IgG in PBS with 0.08% sodium azide.

Maintain at -20°C in undiluted aliquots for up to 1 year from date of receipt.
Handling Recommendations: Upon first thaw, and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Control
HeLa Cell Lysate

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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