• Product nameAnti-KAT3A / CBP antibody - ChIP Grade
    See all KAT3A / CBP primary antibodies
  • Description
    Rabbit polyclonal to KAT3A / CBP - ChIP Grade
  • Tested applicationsSuitable for: ChIP, IPmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Chimpanzee
  • Immunogen

    Immunogen was a synthetic peptide, which represented a portion of human CREB binding protein encoded within exon 17 (LocusLink ID 1387).

  • Positive control
    • Lysate from HeLa cells.
  • General notes

    Cyclic AMP-responsive enhancer binding protein (CREB) binding protein (CBP) and p300 are closely related transcriptional coactivators that have been shown to directly interact with many different DNA-binding transcription factors including nuclear hormone receptors, CREB (cyclic AMP-responsive enhancer binding protein), c-Fos, c-Jun/v-Jun, c-Myb/v-Myb, TFIIB and MyoD.Both CBP and p300 have been shown to display histone acetyltransferase (HAT) activity, capable of acetylating all four core histone particles in nucleosomes.As a result of HAT activity, it has been suggested CBP and p300 may play a direct role in activating chromatin for transcription.Single point mutations in CBP have been proposed as causative factors in the developmental abnormalities of Rubinstein-Taybi syndrome (RTS).Although both CBP and p300 appear to function similarly, the inability of p300 to rescue CBP malfunction iRTS suggests intrinsic functional differences between CBP and p300.



Our Abpromise guarantee covers the use of ab10489 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 2-4µg for 106 cells.
IP Use a concentration of 1 - 4 µg/ml.


  • FunctionAcetylates histones, giving a specific tag for transcriptional activation. Also acetylates non-histone proteins, like NCOA3 coactivator. Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes. Acts as a coactivator of ALX1 in the presence of EP300.
  • Involvement in diseaseNote=Chromosomal aberrations involving CREBBP may be a cause of acute myeloid leukemias. Translocation t(8;16)(p11;p13) with MYST3/MOZ; translocation t(11;16)(q23;p13.3) with MLL/HRX; translocation t(10;16)(q22;p13) with MYST4/MORF. MYST3-CREBBP may induce leukemia by inhibiting RUNX1-mediated transcription.
    Defects in CREBBP are a cause of Rubinstein-Taybi syndrome type 1 (RSTS1) [MIM:180849]. RSTS1 is an autosomal dominant disorder characterized by craniofacial abnormalities, broad thumbs, broad big toes, mental retardation and a propensity for development of malignancies.
  • Sequence similaritiesContains 1 bromo domain.
    Contains 1 KIX domain.
    Contains 2 TAZ-type zinc fingers.
    Contains 1 ZZ-type zinc finger.
  • DomainThe KIX domain mediates binding to HIV-1 Tat.
  • Post-translational
    Methylation of the KIX domain by CARM1 blocks association with CREB. This results in the blockade of CREB signaling, and in activation of apoptotic response.
    Phosphorylated upon DNA damage, probably by ATM or ATR.
    Sumoylation negatively regulates transcriptional activity via the recruitment of DAAX.
  • Cellular localizationCytoplasm. Nucleus. Recruited to nuclear bodies by SS18L1/CREST. In the presence of ALX1 relocalizes from the cytoplasm to the nucleus.
  • Information by UniProt
  • Database links
  • Alternative names
    • CBP antibody
    • CBP_HUMAN antibody
    • CREB binding protein antibody
    • CREB-binding protein antibody
    • Crebbp antibody
    • Cyclic AMP responsive enhancer binding protein antibody
    • KAT3A antibody
    • RSTS antibody
    • RTS antibody
    • Rubinstein Taybi syndrome antibody
    see all

Anti-KAT3A / CBP antibody - ChIP Grade images

  • ab10489 immunoprecipitation of CREB Binding Protein. Samples: Nuclear (NE) or cytoplasmic (S100) extract (10 mg) from HeLa cells.

    Antibody: ab10489 used at 20 µg/10 mg extract.  Detection: Coomassie Brilliant Blue R250 staining of SDS-PAGE gel followed by mass spectrometry to confirm the identity of the band that is CREB Binding Protein .

  • Sonicated Chromatin prepared from U2OS cells was subjected to the ChIP procedure with ab10489 to CBP. Immunoprecipitated chromatin was analysed in the promoter region of c-FOS (active) and in exon 2 of MYO-D (inactive), values are % of inputs.  2–4 µg of ab10489 and 1-2x106 cells were used in each ChIP experiment.

    Sergei Denissov, Prof. Henk Stunnenberg lab, University Nijmengen, NL

References for Anti-KAT3A / CBP antibody - ChIP Grade (ab10489)

This product has been referenced in:
  • Medyouf H  et al. High-level IGF1R expression is required for leukemia-initiating cell activity in T-ALL and is supported by Notch signaling. J Exp Med 208:1809-22 (2011). ChIP . Read more (PubMed: 21807868) »

See 1 Publication for this product

Product Wall

Thank you for contacting us. We have the following antibodies in our catalog that where tested in ChIP: for CBP: ab2832, ab10489, and ab10490 for p300: ab14984 None of the antibodies has been tested so far in zebrafish. If you ...

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