• Product name

  • Description

    Rabbit polyclonal to mH2A2
  • Host species

  • Tested applications

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

    Reacts with: Mouse, Human
    Predicted to work with: Rat, Cow
  • Immunogen

    Recombinant fragment corresponding to Human mH2A2 aa 197-340.
    Database link: AAH16172

  • Positive control

    • A431 whole cell lysate, TOV-21G xenograft
  • General notes

    Previously labelled as Macro H2A.2.


  • Form

  • Storage instructions

    Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
  • Storage buffer

    pH: 7.00
    Preservative: 0.025% Proclin
    Constituents: PBS, 1% BSA, 20% Glycerol
  • Concentration information loading...
  • Purity

    Immunogen affinity purified
  • Clonality

  • Isotype

  • Research areas


Our Abpromise guarantee covers the use of ab102126 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 1/500 - 1/3000. Predicted molecular weight: 40 kDa.
IHC-P 1/100 - 1/500. Suggested antigen retrieval using heat mediated 10mM Citrate buffer or Tris-EDTA buffer (pH 8.0)


  • Function

    Variant histone H2A which replaces conventional H2A in a subset of nucleosomes where it represses transcription. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. May be involved in stable X chromosome inactivation.
  • Sequence similarities

    Contains 1 histone H2A domain.
    Contains 1 Macro domain.
  • Cellular localization

    Nucleus. Chromosome. Enriched in inactive X chromosome chromatin and in senescence-associated heterochromatin.
  • Information by UniProt
  • Database links

  • Alternative names

    • Core histone macro H2A2.2 antibody
    • Core histone macro-H2A.2 antibody
    • Core histone macroH2A2.2 antibody
    • H2A histone family member Y2 antibody
    • H2AFY2 antibody
    • H2AW_HUMAN antibody
    • Histone macroH2A2 antibody
    • Macro H2A.2 antibody
    • Macro H2A2 antibody
    • MacroH2A.2 antibody
    • MacroH2A2 antibody
    • mH2A2 antibody
    see all


  • Anti-mH2A2 antibody (ab102126) at 1/1000 dilution + A431 whole cell lysate at 30 µg

    Predicted band size: 40 kDa

    10% SDS PAGE
  • Immunohistochemical analysis of paraffin-embedded TOV-21G xenograft, using ab102126 at 1/100 dilution.


This product has been referenced in:

  • Maharana S  et al. Chromosome intermingling-the physical basis of chromosome organization in differentiated cells. Nucleic Acids Res 44:5148-60 (2016). Read more (PubMed: 26939888) »
See 1 Publication for this product

Customer reviews and Q&As

1-6 of 6 Abreviews or Q&A

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Mouse Tissue sections (Liver)
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Citrate pH 6
Blocking step
Serum as blocking agent for 30 minute(s) · Concentration: 2.5% · Temperature: 22°C

Abcam user community

Verified customer

Submitted Jan 28 2019

Mouse Tissue lysate - nuclear (Brain nuclei)
Negative control
Brain nuclei
Detection step
Cross-linking (X-ChIP)
Duration of cross-linking step: 5 minute(s) and 0 second(s)
Specification of the cross-linking agent: 0.5% Fromaldehyde
Positive control

Abcam user community

Verified customer

Submitted Feb 10 2017


Thank you very much for your reply.

All of the information we have for each of our products is listed on the online datasheet and these are updated as soon as we receive any new information. So once we know the identity of the band, you will find the information on the datasheet. Unfortunately, these kind of projects are not of a very high priority, especially as this additional band is clearly of a different size than the expected one.

According to ourBLAST searches there is no other protein that shares significant homologywith this region of MacroH2A2. Given that thisband is observedwith acell line derived from a tumour, it might be that it isdue to the specificbiology of this cancer cell line A431.

If you would like to use this antibody with different cells, we would be very grateful if you could submit an Abreview about this product via the online product datasheet. We always encourage customers to send their results back to us, whether positive or negative, and we make all product information available to researchers. Plus, each Abreview earns Abpoints that can be used for discounts on future purchases or rewards such as Amazon.com gift certificates.To find out more about our Abreview system, please see the following webpage: https://www.abcam.com/abreviews

I hope this information is helpful. Please do not hesitate to contact us again with any other questions.

Read More


Thank you very much for your enquiry.

Please accept my apologies for the long delay of my reply. I have been in contact with the source of this antibody regarding the additional band between 72 and 55 kDa. We suspect that this band may be due to alternative splicing. Unfortunately, the identity of the protein causing this band has not been determined further. The lab however confirmed that when testing this antibody in mouse brain samples this band is only very faint.

Please be reassured that all of our products are covered by our Abpromise, which guarantees that the product will work in the applications and species specified on the datasheet, or we will offer a replacement, credit, or refund within 6 months of purchase (www.abcam.com/Abpromise).

If the product is to be used in an untested application or species (including the predicted to react rat and cow), you may be eligible for our testing discount program if the antibody has not yet been purchased. Please contact our Scientific Support team by replying to this email prior to purchase for more information.

We aim to provide as much information as possible to customers, so I am sorry that this has not been possible on this occasion. I hope this information is nevertheless helpful for you. Should you have any further questions, please do not hesitate to contact us.

Read More
Mouse Cell lysate - whole cell (ES)
Negative control
macroH2a2-/- ES cells IgG ab
Detection step
Real-time PCR
Cross-linking (X-ChIP)
Duration of cross-linking step: 10 minute(s) and 0 second(s)
Specification of the cross-linking agent: Formaldehyde
Positive control

Abcam user community

Verified customer

Submitted Nov 09 2011


I am very pleased to hear you would like to accept our offer and test ab4173 & ab102126 in mouse samples. This code will be worth the price you pay for ab4173 & ab102126 and can be used with any single future primary antibody purchase before the expiration date. To redeem this offer, you must first submit your Abreview with your mouse data. Please include this code in the “Additional Comments” section so that we will know the review is for this promotion. The code will be active once the Abreview has been submitted. The code can be redeemed in the following ways: 1) Call to place your order by phone and mention the code to our customer service department; 2) Include the code in your fax order; 3) Place your order on the web and remember to enter your promotional code. Any feedback that you can provide will be greatly appreciated, whether positive or negative. If you have any further questions, please do not hesitate to contact us. We look forward to receiving your Abreview and wish you luck with your research. To find out more about our Abreview system, please visit: https://www.abcam.com/abreviews. The terms and conditions applicable to this offer can be found here: www.abcam.com/collaborationdiscount.

Read More

For licensing inquiries, please contact partnerships@abcam.com

Sign up