• Product name
  • Description
    Rabbit polyclonal to p400
  • Tested applications
    Suitable for: WB, IP, ChIP, ICC/IFmore details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rat, Horse, Guinea pig, Cow, Pig, Chimpanzee, Rhesus monkey, Gorilla, Chinese hamster, Orangutan, Elephant
  • Immunogen

    Synthetic peptide corresponding to a region between C terminal residues 3075 and 3124 of human p400

  • Positive control
    • HeLa whole cell lysates.



Our Abpromise guarantee covers the use of ab70301 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 1/2000 - 1/5000. Detects a band of approximately 470 kDa (predicted molecular weight: 344 kDa).
IP Use at 2 µg/mg of lysate.
ChIP Use at an assay dependent concentration.
ICC/IF Use a concentration of 1 µg/ml.


  • Function
    Component of the NuA4 histone acetyltransferase complex which is involved in transcriptional activation of select genes principally by acetylation of nucleosomal histones H4 and H2A. This modification may both alter nucleosome - DNA interactions and promote interaction of the modified histones with other proteins which positively regulate transcription. May be required for transcriptional activation of E2F1 and MYC target genes during cellular proliferation. The NuA4 complex ATPase and helicase activities seem to be, at least in part, contributed by the association of RUVBL1 and RUVBL2 with EP400. May regulate ZNF42 transcription activity.
  • Tissue specificity
    Ubiquitously expressed.
  • Sequence similarities
    Belongs to the SNF2/RAD54 helicase family. SWR1 subfamily.
    Contains 1 helicase ATP-binding domain.
    Contains 1 helicase C-terminal domain.
    Contains 1 HSA domain.
    Contains 1 Myb-like domain.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • CAG repeat protein 32 antibody
    • CAGH 32 antibody
    • CAGH32 antibody
    • DKFZP434I225 antibody
    • Domino homolog antibody
    • E1A binding protein p400 antibody
    • E1A-binding protein p400 antibody
    • EP 400 antibody
    • EP400 antibody
    • EP400_HUMAN antibody
    • FLJ42018 antibody
    • FLJ45115 antibody
    • hDomino antibody
    • KIAA1498 antibody
    • KIAA1818 antibody
    • p400 kDa SWI2/SNF2 related protein antibody
    • p400 kDa SWI2/SNF2-related protein antibody
    • P400 SWI2/SNF2 related protein antibody
    • TNRC 12 antibody
    • TNRC12 antibody
    • Trinucleotide repeat containing 12 antibody
    • Trinucleotide repeat containing gene 12 protein antibody
    • Trinucleotide repeat-containing gene 12 protein antibody
    see all


  • All lanes : Anti-p400 antibody (ab70301) at 0.04 µg/ml

    Lane 1 : HeLa whole cell lysate at 50 µg
    Lane 2 : HeLa whole cell lysate at 15 µg
    Lane 3 : HeLa whole cell lysate at 5 µg

    Predicted band size : 344 kDa
    Observed band size : 470 kDa (why is the actual band size different from the predicted?)

    Exposure time : 30 seconds
  • Detection of Human p400 by Western Blot of Immunprecipitate. Lane 1: Irrelevant antibody used for precipitation. Lane 2: ab70301 at 0.04µg/ml staining p400 in HeLa whole cell lysates immunoprecipitated using ab70301 at 3µg/mg lysate (1 mg/IP; 1/4 of IP loaded/lane). Lane 3: Control IgG used for precipitation. Detection: Chemiluminescence with exposure time 10 seconds.
  • ab70301 (1/200) staining p400 in asynchronous HeLa cells (green). Cells were fixed in paraformaldehyde, permeabilized using 0.5% Triton X-100/PBS and counterstained with DAPI in order to highlight the nucleus (red). For further experimental details please refer to Abreview.

    See Abreview

  • ICC/IF image of ab70301 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab70301, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.


This product has been referenced in:
  • Pradhan SK  et al. EP400 Deposits H3.3 into Promoters and Enhancers during Gene Activation. Mol Cell 61:27-38 (2016). Read more (PubMed: 26669263) »
  • Pérez-García V  et al. Cell activation-induced phosphoinositide 3-kinase alpha/beta dimerization regulates PTEN activity. Mol Cell Biol 34:3359-73 (2014). WB ; Mouse . Read more (PubMed: 24958106) »

See all 6 Publications for this product

Customer reviews and Q&As

Due to the high molecular weight of this protein, , we recommend using NuPAGE 3-8% tris-Acetate Gels from Novex (formerly Invitrogen) Catalog # EA03752Box, Novex Tris Acetate SDS Running Buffer, and Novex Transfer Buffer-20X. Run the transfer apparatus...

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Abcam guarantees this product to work in the species/application used in this Abreview.
Immunocytochemistry/ Immunofluorescence
Human Cell (HeLa)
Yes - 0.5% Triton-X100 in PBS

Dr. Kirk Mcmanus

Verified customer

Submitted Sep 03 2012

Thank you for contacting us. As discussed on phone we unfortunately do not sell small sizes of our products. The reason is that; we have over 70,000 products in our catalogue and having the small sized sample of each would be difficult to keep. How...

Read More
Abcam guarantees this product to work in the species/application used in this Abreview.
Human Cell lysate - nuclear (Colon cancer cell line)
Colon cancer cell line
Cross-linking (X-ChIP)
Duration of cross-linking step: 10 minute(s) and 0 second(s)
Detection step
Real-time PCR
Negative control
1.ChIP with IgG.
2.ChIP at intron region

Dr. santosh chauhan

Verified customer

Submitted Aug 10 2011


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