• Product name

  • Description

    Rabbit polyclonal to PPP2R1A
  • Host species

  • Tested applications

    Suitable for: WB, ICC/IF, IHC-Pmore details
  • Species reactivity

    Reacts with: Mouse, Human
    Predicted to work with: Rat, Cow, Pig, Zebrafish, Xenopus tropicalis
  • Immunogen

    Recombinant fragment corresponding to a region within amino acids 308-589 of PPP2R1A (Uniprot ID P30153)

  • Positive control

    • HeLa, NIH-3T3, JC, BCL-1 whole cell lysate; HeLa cells; U87 xenograft


  • Form

  • Storage instructions

    Shipped at 4°C. Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage buffer

    pH: 7.00
    Preservative: 0.025% Proclin
    Constituents: PBS, 20% Glycerol
  • Concentration information loading...
  • Purity

    Immunogen affinity purified
  • Clonality

  • Isotype

  • Research areas


Our Abpromise guarantee covers the use of ab154551 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 1/1000 - 1/10000. Predicted molecular weight: 65 kDa.
ICC/IF 1/100 - 1/1000.
IHC-P 1/100 - 1/1000.


  • Function

    The PR65 subunit of protein phosphatase 2A serves as a scaffolding molecule to coordinate the assembly of the catalytic subunit and a variable regulatory B subunit. Required for proper chromosome segregation and for centromeric localization of SGOL1 in mitosis.
  • Sequence similarities

    Belongs to the phosphatase 2A regulatory subunit A family.
    Contains 15 HEAT repeats.
  • Domain

    Each HEAT repeat appears to consist of two alpha helices joined by a hydrophilic region, the intrarepeat loop. The repeat units may be arranged laterally to form a rod-like structure.
  • Cellular localization

    Cytoplasm. Chromosome > centromere. Centromeric localization requires the presence of BUB1.
  • Information by UniProt
  • Database links

  • Alternative names

    • 2AAA_HUMAN antibody
    • 6330556D22Rik antibody
    • Alpha isoform of regulatory subunit A, protein phosphatase antibody
    • DKFZp470L0914 antibody
    • Medium tumor antigen-associated 61 kDa protein antibody
    • MGC128399 antibody
    • MGC786 antibody
    • MGC83000 antibody
    • MGC95083 antibody
    • PP2A Aalpha antibody
    • PP2A antibody
    • PP2A subunit A isoform PR65-alpha antibody
    • PP2A subunit A isoform R1-alpha antibody
    • PP2A, subunit A, PR65-alpha isoform antibody
    • PP2A, subunit A, R1-alpha isoform antibody
    • PP2AAALPHA antibody
    • Ppp2r1a antibody
    • ppp2r1a-b antibody
    • PR65 antibody
    • PR65-alpha antibody
    • PR65A antibody
    • Protein phosphatase 2 (formerly 2A), regulatory subunit A (PR 65), alpha isoform antibody
    • Protein phosphatase 2 (Formerly 2A), regulatory subunit A (PR 65), alpha isoform, isoform CRA_a antibody
    • Protein phosphatase 2 (formerly 2A), regulatory subunit A, antibody
    • Protein phosphatase 2 regulatory subunit A alpha antibody
    • Protein phosphatase 2, 65-KD regulatory subunit A, alpha antibody
    • Protein phosphatase 2, regulatory subunit A, alpha isoform antibody
    • Protein phosphatase 2, structural/regulatory subunit A, alpha; PPP2R1A antibody
    • Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform antibody
    see all


  • Anti-PPP2R1A antibody (ab154551) at 1/1000 dilution + HeLa whole cell lysate at 30 µg

    Predicted band size: 65 kDa

    7.5% SDS PAGE
  • All lanes : Anti-PPP2R1A antibody (ab154551) at 1/5000 dilution

    Lane 1 : NIH-3T3 whole cell lysate
    Lane 2 : JC whole cell lysate
    Lane 3 : BCL-1 whole cell lysate

    Lysates/proteins at 30 µg per lane.

    Predicted band size: 65 kDa

    7.5% SDS PAGE
  • Immunofluorescent analysis of methanol-fixed HeLa cells labeling PPP2R1A with ab154551 antibody at 1/500 dilution. Lower panel co-stained with Hoechst 33342.
  • Immunohistochemical analysis of paraffin-embedded U87 xenograft labeling PPP2R1A with ab154551 antibody at 1/500 dilution.


This product has been referenced in:

See 1 Publication for this product

Customer reviews and Q&As

1-2 of 2 Abreviews or Q&A

Immunocytochemistry/ Immunofluorescence
Human Cell (HeLa)
Yes - 0.5% TritonX100 in PBS

Dr. Kirk Mcmanus

Verified customer

Submitted Jun 19 2015


Here is the IHC testing protocol that was used.

The laboratory used Tris-EDTA buffer as antigen retrieval, but the suitable buffer may be dependent on different tissue. We recommend the customer try Tris-EDTA buffer and citrate buffer, and optimize the condition based on the testing result.
I hope this will be helpful. If you have any questions, please do not hesitaet to contact me.

IHC protocol

1. Heat the paraffin-embedded tissue sections in 60℃ oven for 90mins.

2. Antigen retrieval /deparaffine: Incubate the sections in antigen retrieval buffer (EDTA-based, pH 8.0) in high pressure Cooker for 15mins.

3. PBS wash twice for 5 mins.

4. After the sections cools down, Incubate the sections in 3% H2O2 at RT for 30min.

5. PBS wash twice for 5 mins.

6. Incubate the sections in 1.5% goat serum (dilute goat serum by 1xPBS) at RT for 30


7. Incubate the sections in primary antibody at 4 degree C for overnight. (dilute primary antibody in 1.5% goat serum blocking buffer, (dilutions depends on the antibody)

8. PBS wash twice for 5 mins.

9. Incubate the sections in secondary antibody at 1:200 dilution (dilution depends on the antibody) at RT for 30min. (dilute the primary antibody in blocking buffer)

10. PBS wash twice for 5 mins.

11. Add ABC reagent for 30mins at RT

12. PBS wash twice for 5 mins.

13. Add DAB reagent until the signal appears (within 5 mins)

14. PBS wash twice for 5 mins.

15. Counter-stain the section in Hematoxylin at RT for 30 sec ˜ 3 mins.

16. Wash the section by running tap water for 5 mins.

17. Dehydrate sections:

a. Incubate the section with 95% EtOH at RT for 5 mins.

b. Incubate the section with 99.5% EtOH at RT for mins.

c. Incubate the section with Xylene for at RT for 5 mins.

18. Mount the sections with coverslip.

Abcam also provides a number of IHC reagents and kits such as DAB substrate kits, donkey or goat sera and antigen retrieval buffers. All of our products are covered by our Abpromise guarantee and are fully supported by our scientific support staff. I have provided links to a few of these products below.

DAB substrate kit: https://www.abcam.com/DAB-substrate-kit-ab94665.html

Donkey serum: https://www.abcam.com/Donkey-Serum-ab7475.html

Goat serum: https://www.abcam.com/Goat-Serum-ab7481.html

Antigen retrieval buffer: https://www.abcam.com/Antigen-Retrieval-Buffer-100X-Tris-EDTA-Buffer-pH-9-0-ab93684.html

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