• Product name
    Anti-PP2A alpha + beta antibody
    See all PP2A alpha + beta primary antibodies
  • Description
    Goat polyclonal to PP2A alpha + beta
  • Host species
  • Specificity
    This antibody will recognise both alpha and beta isoforms, which are almost identical.
  • Tested applications
    Suitable for: WBmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Rabbit, Dog, Pig
  • Immunogen

    Synthetic peptide corresponding to Human PP2A alpha + beta aa 297-309 (C terminal).


    (Peptide available as ab22802)

  • Positive control
    • Recombinant Human PP2A-alpha protein (ab114424) can be used as a positive control in WB.



Our Abpromise guarantee covers the use of ab1309 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use a concentration of 0.5 - 2 µg/ml. Predicted molecular weight: 37 kDa.Can be blocked with Human PP2A alpha + beta peptide (ab22802).


  • Function
    PP2A can modulate the activity of phosphorylase B kinase casein kinase 2, mitogen-stimulated S6 kinase, and MAP-2 kinase. Cooperates with SGOL2 to protect centromeric cohesin from separase-mediated cleavage in oocytes specifically during meiosis I (By similarity). Can dephosphorylate SV40 large T antigen and p53/TP53. Dephosphorylates SV40 large T antigen, preferentially on serine residues 120, 123, 677, and perhaps 679. The C subunit was most active, followed by the AC form, which was more active than the ABC form, and activity of all three forms was strongly stimulated by manganese, and to a lesser extent by magnesium. Dephosphorylation by the AC form, but not C or ABC form is inhibited by small T antigen. Activates RAF1 by dephosphorylating it at 'Ser-259'.
  • Sequence similarities
    Belongs to the PPP phosphatase family. PP-1 subfamily.
  • Post-translational
    Reversibly methyl esterified on Leu-309. Carboxyl methylation may play a role in holoenzyme assembly, enhancing the affinity of the PP2A core enzyme for some, but not all, regulatory subunits. It varies during the cell cycle.
    Phosphorylation of either threonine (by autophosphorylation-activated protein kinase) or tyrosine results in inactivation of the phosphatase. Auto-dephosphorylation has been suggested as a mechanism for reactivation.
  • Cellular localization
    Cytoplasm. Nucleus. Chromosome > centromere. Cytoplasm > cytoskeleton > spindle pole. In prometaphase cells, but not in anaphase cells, localizes at centromeres. During mitosis, also found at spindle poles. Centromeric localization requires the presence of SGOL2.
  • Information by UniProt
  • Database links
  • Alternative names
    • PP2A A antibody
    • PP2A alpha antibody
    • PP2A B antibody
    • PP2A beta antibody
    • PP2A-alpha antibody
    • PP2A-beta antibody
    • PP2AA_HUMAN antibody
    • PP2AB_HUMAN antibody
    • PP2Abeta antibody
    • PP2Ac antibody
    • PP2CB antibody
    • PPP2CA antibody
    • PPP2CB antibody
    • Protein phosphatase 2 catalytic subunit alpha isoform antibody
    • Protein phosphatase 2 catalytic subunit beta isoform antibody
    • Protein phosphatase type 2A catalytic subunit antibody
    • Replication protein C antibody
    • RP C antibody
    • RP-C antibody
    • Serine/threonine protein phosphatase 2A catalytic subunit alpha isoform antibody
    • Serine/threonine protein phosphatase 2A catalytic subunit beta isoform antibody
    • Serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform antibody
    see all


  • Anti-PP2A alpha + beta antibody (ab1309) at 0.05 µg/ml + Human Cerebellum lysates at 35 µg

    Developed using the ECL technique.

    Predicted band size: 37 kDa

    Primary incubated for 1 hour.


ab1309 has not yet been referenced specifically in any publications.

Customer reviews and Q&As


Thank you for your enquiry. We would like to emphasize that ab1309 has not been tested on rat samples. It has been tested on mouse brain cell lysates as the Western blot image indicates, so we would suggest using this type of sample as positive control. Customer also should test the secondary antibody to make sure that it works properly. There is no information in your e-mail if it has been done or not. There is no information how the lysate was prepared. Any protease inhibitors? Is the target protein intact in the samples? How is PPP2CA expressed in rat liver and skeletal muscle? Is the expression of PPP2CA lower or higher compared to human or rat brain? Perhaps the customer should test different concentration of the primary antibody. If you need anything further or any help then please let us know. Please complete and forward our on-line Western blot Questionnaire.

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