• Product name

    Anti-SRC3 antibody [EPR4374(3)]
    See all SRC3 primary antibodies
  • Description

    Rabbit monoclonal [EPR4374(3)] to SRC3
  • Host species

  • Tested applications

    Suitable for: WB, IHC-P, ICC/IF, Flow Cytmore details
    Unsuitable for: IP
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide corresponding to residues on the C terminus of Human KAT13B/ AIB1 (UniProt ID: Q9Y6Q9).

  • Positive control

    • Daudi, HeLa and K562 cell lysates; Human endometrium adenocarcinoma tissue
  • General notes

    Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.


    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 ab133611 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 1/1000 - 1/10000. Detects a band of approximately 160 kDa (predicted molecular weight: 155 kDa).Can be blocked with Recombinant Human SRC3 protein (ab159961).
IHC-P 1/50 - 1/100. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
ICC/IF 1/50 - 1/100.
Flow Cyt 1/100 - 1/500.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.


  • Application notes
    Is unsuitable for IP.
  • Target

    • Function

      Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Plays a central role in creating a multisubunit coactivator complex, which probably acts via remodeling of chromatin. Involved in the coactivation of different nuclear receptors, such as for steroids (GR and ER), retinoids (RARs and RXRs), thyroid hormone (TRs), vitamin D3 (VDR) and prostanoids (PPARs). Displays histone acetyltransferase activity. Also involved in the coactivation of the NF-kappa-B pathway via its interaction with the NFKB1 subunit. Interacts with PSMB9.
    • Tissue specificity

      Widely expressed. High expression in heart, skeletal muscle, pancreas and placenta. Low expression in brain, and very low in lung, liver and kidney.
    • Sequence similarities

      Belongs to the SRC/p160 nuclear receptor coactivator family.
      Contains 1 basic helix-loop-helix (bHLH) domain.
      Contains 1 PAS (PER-ARNT-SIM) domain.
    • Domain

      Contains three Leu-Xaa-Xaa-Leu-Leu (LXXLL) motifs. Motifs 1 and 2 are essential for the association with nuclear receptors, and constitute the RID domain (Receptor-interacting domain).
    • Post-translational

      Acetylated by CREBBP. Acetylation occurs in the RID domain, and disrupts the interaction with nuclear receptors and regulates its function.
      Methylated by CARM1.
      Phosphorylated by IKK complex. Regulated its function.
    • Cellular localization

      Cytoplasm. Nucleus. Mainly cytoplasmic and weakly nuclear. Upon TNF activation and subsequent phosphorylation, it translocates from the cytoplasm to the nucleus.
    • Information by UniProt
    • Database links

    • Alternative names

      • ACTR antibody
      • AIB 1 antibody
      • AIB-1 antibody
      • AIB1 antibody
      • Amplified in breast cancer 1 antibody
      • Amplified in breast cancer 1 protein antibody
      • bHLHe42 antibody
      • CAGH 16 antibody
      • CAGH16 antibody
      • CBP interacting protein antibody
      • CBP-interacting protein antibody
      • Class E basic helix-loop-helix protein 42 antibody
      • CTG 26 antibody
      • CTG26 antibody
      • KAT13B / AIB1 antibody
      • MGC141848 antibody
      • NCOA 3 antibody
      • NCoA-3 antibody
      • Ncoa3 antibody
      • NCOA3_HUMAN antibody
      • Nuclear receptor coactivator 3 antibody
      • pCIP antibody
      • RAC 3 antibody
      • RAC-3 antibody
      • RAC3 antibody
      • Receptor associated coactivator 3 antibody
      • Receptor-associated coactivator 3 antibody
      • SRC 3 antibody
      • SRC-3 antibody
      • SRC3 antibody
      • Steroid receptor coactivator protein 3 antibody
      • Thyroid hormone receptor activator molecule 1 antibody
      • TNRC14 antibody
      • TNRC16 antibody
      • TRAM 1 antibody
      • TRAM-1 antibody
      • TRAM1 antibody
      see all


    • All lanes : Anti-SRC3 antibody [EPR4374(3)] (ab133611) at 1/1000 dilution

      Lane 1 : Daudi cell lysate
      Lane 2 : HeLa cell lysate
      Lane 3 : K562 cell lysate

      Lysates/proteins at 10 µg per lane.

      All lanes : HRP labelled goat anti-rabbit at 1/2000 dilution

      Predicted band size: 155 kDa

    • Overlay histogram showing HeLa cells stained with ab133611 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab133611, 1/100 dilution) for 30 min at 22°C. The secondary antibody used was Alexa Fluor® 488 goat anti-rabbit IgG (H&L) (ab150077) at 1/2000 dilution for 30 min at 22°C. Isotype control antibody (black line) was rabbit IgG (monoclonal) (1μg/1x106 cells) used under the same conditions. Unlabelled sample (blue line) was also used as a control. Acquisition of >5,000 events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter.
    • Immunohistochemical analysis of KAT13B / AIB1 in paraffin embedded Human endometrium adenocarcinoma tissue, using ab133611 at a dilution of 1/50.


    This product has been referenced in:

    • Gee F  et al. Correlation of the osteoarthritis susceptibility variants that map to chromosome 20q13 with an expression quantitative trait locus operating on NCOA3 and with functional variation at the polymorphism rs116855380. Arthritis Rheumatol 67:2923-32 (2015). Read more (PubMed: 26211391) »
    See 1 Publication for this product

    Customer reviews and Q&As

    Western blot
    Human Cell lysate - whole cell (HeLa)
    Loading amount
    50 µg
    Gel Running Conditions
    Reduced Denaturing (4-15% gel)
    Blocking step
    Milk as blocking agent for 30 minute(s) · Concentration: 5% · Temperature: 25°C

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