Validated using a knockout cell line

Recombinant Anti-KAT2A / GCN5 antibody [EPR21146] - BSA and Azide free (ab231075)


  • Product name

    Anti-KAT2A / GCN5 antibody [EPR21146] - BSA and Azide free
    See all KAT2A / GCN5 primary antibodies
  • Description

    Rabbit monoclonal [EPR21146] to KAT2A / GCN5 - BSA and Azide free
  • Host species

  • Tested applications

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

    Reacts with: Mouse, Rat, Human
  • Immunogen

    Recombinant fragment within Human KAT2A/ GCN5 aa 50-350. The exact sequence is proprietary.
    Database link: Q92830

  • Positive control

    • WB: HeLa whole cell lysate and human fetal brain tissue lysate
  • General notes

    Ab231075 is the carrier-free version of ab217876. This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.


    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    ab231075 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.

    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.



Our Abpromise guarantee covers the use of ab231075 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 at an assay dependent concentration.
WB Use at an assay dependent concentration. Detects a band of approximately 94 kDa (predicted molecular weight: 94 kDa).
IP Use at an assay dependent concentration.


  • Function

    Functions as a histone acetyltransferase (HAT) to promote transcriptional activation. Acetylation of histones gives a specific tag for epigenetic transcription activation. Has significant histone acetyltransferase activity with core histones, but not with nucleosome core particles. In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes. Component of the ATAC complex, a complex with histone acetyltransferase activity on histones H3 and H4.
  • Tissue specificity

    Expressed in all tissues tested, with most abundant expression in ovary.
  • Sequence similarities

    Belongs to the GCN5 family.
    Contains 1 bromo domain.
    Contains 1 N-acetyltransferase domain.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • 1110051E14Rik antibody
    • AW212720 antibody
    • EC antibody
    • GCN 5 antibody
    • GCN5 (general control of amino-acid synthesis, yeast, homolog)-like 2 antibody
    • Gcn5 antibody
    • GCN5 general control of amino-acid synthesis 5-like 2 (yeast) antibody
    • GCN5L2 antibody
    • general control of amino acid synthesis 5-like 2 antibody
    • General control of amino acid synthesis protein 5-like 2 antibody
    • General control of amino acid synthesis, yeast, homolog-like 2 antibody
    • HGCN5 antibody
    • Histone acetyltransferase GCN5 antibody
    • Histone acetyltransferase KAT2A antibody
    • hsGCN5 antibody
    • K(lysine) acetyltransferase 2A antibody
    • KAT2 A antibody
    • KAT2A antibody
    • KAT2A_HUMAN antibody
    • Lysine acetyltransferase 2A antibody
    • MGC102791 antibody
    • PCAF-b antibody
    • STAF97 antibody
    see all


  • All lanes : Anti-KAT2A / GCN5 antibody [EPR21146] - ChIP Grade (ab217876) at 1/1000 dilution

    Lane 1 : Wild type HAP1 whole cell lysate
    Lane 2 : KAT2A / GCN5-knockout HAP1 whole cell lysate whole cell lysate
    Lane 3 : HEK-293T (uman epithelial cell line from embryonic kidney transformed with large T antigen) whole cell lysate
    Lane 4 : MCF7 (human breast adenocarcinoma cell line) whole cell lysate

    Lysates/proteins at 10 µg per lane.

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

    Developed using the ECL technique.

    Predicted band size: 94 kDa

    Blocking/Dilution buffer: 5% NFDM/TBST

    Exposure time: 3 minutes

    ab217876 was shown to specifically react with KAT2A in wild type HAP1 cells. No band was observed when KAT2A knockout samples were used. Wild-type and KAT2A knockout samples were subjected to SDS-PAGE. ab217876 and ab181602 (Human anti-GAPDH loading control) were incubated overnight at 4°C at a 1/1000 dilution and 1/5000 dilution respectively. Blots were developed with Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated (ab97051) secondary antibody at 1/100,000 dilution for 1 hour at room temperature before imaging. The blot was developed on a BIO-RAD® ChemiDoc™ MP instrument.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab217876).

  • Chromatin was prepared from A549 treated with thapsigargin (1µM 12 hours) cells according to the Abcam Dual X-ChIP protocol*. Cells were fixed with EGS for 30 minutes, then formaldehyde for 10 minutes.
    The ChIP was performed with 25 µg of chromatin, 5 µg of ab217876 (red), and 20 µl of Protein A/G sepharose beads. 5 µg of rabbit normal IgG was added to the beads control (gray). The immunoprecipitated DNA was quantified by real time PCR (Sybr green approach).

    Primers and probes are located in the first kb of the transcribed region.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab217876).

  • KAT2A / GCN5 was immunoprecipitated from 0.35mg of HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate with ab217876 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab217876 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366), was used for detection at 1/5000 dilution.

    Lane 1: HeLa whole cell lysate 10ug (Input). 

    Lane 2: ab217876 IP in HeLa whole cell lysate. 

    Lane 3: Rabbit monoclonal IgG (ab172730) instead of ab217876 in HeLa whole cell lysate.

    Blocking and dilution buffer and concentration: 5% NFDM/TBST.
    Exposure time: 30 seconds.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab217876).


ab231075 has not yet been referenced specifically in any publications.

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