Recombinant Anti-Histone H2A antibody [EPR18089] - ChIP Grade (ab188312)


  • Product name

    Anti-Histone H2A antibody [EPR18089] - ChIP Grade
    See all Histone H2A primary antibodies
  • Description

    Rabbit monoclonal [EPR18089] to Histone H2A - ChIP Grade
  • Host species

  • Tested applications

    Suitable for: ChIP, WB, PepArrmore details
  • Species reactivity

    Reacts with: Saccharomyces cerevisiae
  • Immunogen

    Synthetic peptide (the amino acid sequence is considered to be commercially sensitive) within Saccharomyces cerevisiae Histone H2A aa 50 to the C-terminus. The exact sequence is proprietary.
    Database link: P04912

  • Positive control

    • WB: Saccharomyces cerevisiae lysate. ChIP: Chromatin prepared from Saccharomyces cerevisiae cells.
  • General notes



    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.


  • Form

  • Storage instructions

    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.
  • Storage buffer

    Preservative: 0.01% Sodium azide
    Constituents: PBS, 40% Glycerol, 0.05% BSA
  • Concentration information loading...
  • Purity

    Protein A purified
  • Clonality

  • Clone number

  • Isotype

  • Research areas


Our Abpromise guarantee covers the use of ab188312 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
ChIP Use 2 µg for 25 µg of chromatin.
WB 1/500. Detects a band of approximately 14 kDa (predicted molecular weight: 14 kDa).
PepArr Use at an assay dependent concentration.


  • Function

    Core component of nucleosome. 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.
  • Sequence similarities

    Belongs to the histone H2A family.
  • Post-translational

    The chromatin-associated form is phosphorylated on Thr-121 during mitosis.
    Deiminated on Arg-4 in granulocytes upon calcium entry.
    Monoubiquitination of Lys-120 by RING1 and RNF2/RING2 complex gives a specific tag for epigenetic transcriptional repression and participates in X chromosome inactivation of female mammals. It is involved in the initiation of both imprinted and random X inactivation. Ubiquitinated H2A is enriched in inactive X chromosome chromatin. Ubiquitination of H2A functions downstream of methylation of 'Lys-27' of histone H3. Monoubiquitination of Lys-120 by RNF2/RING2 can also be induced by ultraviolet and may be involved in DNA repair. Following DNA double-strand breaks (DSBs), it is ubiquitinated through 'Lys-63' linkage of ubiquitin moieties by the E2 ligase UBE2N and the E3 ligases RNF8 and RNF168, leading to the recruitment of repair proteins to sites of DNA damage. Monoubiquitination and ionizing radiation-induced 'Lys-63'-linked ubiquitination are distinct events.
    Phosphorylation on Ser-2 is enhanced during mitosis. Phosphorylation on Ser-2 by RPS6KA5/MSK1 directly represses transcription. Acetylation of H3 inhibits Ser-2 phosphorylation by RPS6KA5/MSK1.
    Symmetric dimethylation on Arg-4 by the PRDM1/PRMT5 complex may play a crucial role in the germ-cell lineage.
  • Cellular localization

    Nucleus. Chromosome.
  • Information by UniProt
  • Database links

    • Alternative names

      • H2a 615 antibody
      • H2A antibody
      • H2A GL101 antibody
      • H2A histone family member A antibody
      • H2A.1 antibody
      • H2A.2 antibody
      • H2A/a antibody
      • H2A/m antibody
      • H2A/O antibody
      • H2A/q antibody
      • H2A1B_HUMAN antibody
      • H2AFA antibody
      • H2AFE antibody
      • H2AFL antibody
      • H2AFM antibody
      • H2AFO antibody
      • H2AFQ antibody
      • HIST1H2AE antibody
      • HIST1H2AJ antibody
      • HIST2H2AA antibody
      • HIST2H2AA3 antibody
      • HIST2H2AB antibody
      • HIST2H2AC antibody
      • Histone 1 H2ae antibody
      • Histone 2 H2aa3 antibody
      • Histone 2 H2ab antibody
      • Histone 2 H2ac antibody
      • Histone H2A type 1 B antibody
      • Histone H2A type 1 C antibody
      • Histone H2A type 1 E antibody
      • Histone H2A type 1 J antibody
      • Histone H2A type 1-B/E antibody
      • Histone H2A.2 antibody
      • Histone H2A/a antibody
      • Histone H2A/m antibody
      • MGC74460 antibody
      see all


    • Anti-Histone H2A antibody [EPR18089] - ChIP Grade (ab188312) at 1/500 dilution + Saccharomyces cerevisiae lysate at 10 µg

      Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/100000 dilution

      Predicted band size: 14 kDa
      Observed band size: 14 kDa

      Exposure time: 30 seconds

      Blocking/Dilution buffer: 5% BSA/TBST.

    • Chromatin was prepared from Saccharomyces cerevisiae cells according to the Abcam X-ChIP protocol. Cells were fixed with formaldehyde for 10 minutes. The ChIP was performed with 25µg of chromatin, 2µg of ab188312 (blue), and 20µl of Anti Rabbit IgG sepharose beads. 2μg of rabbit normal IgG was added to the beads control (yellow). The immunoprecipitated DNA was quantified by real time PCR (Sybr green approach).

    • ab188312 was tested in Peptide array against 501 different modified and unmodified histone peptides; each peptide is printed on the array at six concentrations (each in triplicate).
      Circle area represents affinity between the antibody and a peptide: all antigen-containing peptides are displayed as red circles, all other peptides as blue circles. The affinity is calculated as area under curve when antibody binding values are plotted against the corresponding peptide concentration. Each circle area is normalized to the peptide with the strongest affinity.
      The complete dataset, including full list of all peptides and information on the position of each peptide in the diagram, can be downloaded here.


    ab188312 has not yet been referenced specifically in any publications.

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