• Product nameAnti-FOXP3 antibody
    See all FOXP3 primary antibodies
  • Description
    Rabbit polyclonal to FOXP3
  • SpecificityThis antibody recognises a single band representing human FOXP3 in a HEK293 lysate overexpressing human FOXP3.
  • Tested applicationsSuitable for: WB, IHC-P, Flow Cytmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Synthetic peptide derived from residues 1 - 100 of Human FOXP3.


  • Positive control
    • This antibody gave a positive signal in Hek293 lysate over expressing FoxP3 and Human tonsil.



Our Abpromise guarantee covers the use of ab4728 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 Use at an assay dependent concentration. Detects a band of approximately 50 kDa (predicted molecular weight: 47 kDa).
IHC-P Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
Flow Cyt Use at an assay dependent concentration.


  • FunctionProbable transcription factor. Plays a critical role in the control of immune response.
  • Involvement in diseaseDefects in FOXP3 are the cause of immunodeficiency polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) [MIM:304790]; also known as X-linked autoimmunity-immunodeficiency syndrome. IPEX is characterized by neonatal onset insulin-dependent diabetes mellitus, infections, secretory diarrhea, trombocytopenia, anemia and eczema. It is usually lethal in infancy.
  • Sequence similaritiesContains 1 C2H2-type zinc finger.
    Contains 1 fork-head DNA-binding domain.
  • Cellular localizationNucleus.
  • Information by UniProt
  • Database links
  • Alternative names
    • AIID antibody
    • DIETER antibody
    • Forkhead box P3 antibody
    • Forkhead box protein P3 antibody
    • FOXP3 antibody
    • FOXP3_HUMAN antibody
    • FOXP3delta7 antibody
    • Immune dysregulation polyendocrinopathy enteropathy X linked antibody
    • Immunodeficiency polyendocrinopathy enteropathy X linked antibody
    • IPEX antibody
    • JM2 antibody
    • MGC141961 antibody
    • MGC141963 antibody
    • OTTHUMP00000025832 antibody
    • OTTHUMP00000025833 antibody
    • OTTHUMP00000226737 antibody
    • PIDX antibody
    • Scurfin antibody
    • XPID antibody
    see all

Anti-FOXP3 antibody images

  • Predicted band size : 47 kDa

    Western blot using ab4728 at 1/500.

    Lane 1: HEK 293 lysate with ab4728
    Lane 2: HEK 293 lysate over expressing human FOXP3 with ab4728
    Lane 3: HEK 293 lysate over expressing mouse FOXP3 with ab4728
    Lane 4: HEK 293 lysate with secondary antibody control ab6721.

    Secondary antibody: Goat polyclonal to Rabbit IgG (HRP) ab6721 1/5000.
    Exposure time: 30 sec.
    Expected molecular weight: 47kD

  • IHC image of FOXP3 staining in human tonsil FFPE section, performed on a BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab4728, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

References for Anti-FOXP3 antibody (ab4728)

This product has been referenced in:
  • Hvarness T  et al. Phenotypic characterisation of immune cell infiltrates in testicular germ cell neoplasia. J Reprod Immunol 100:135-45 (2013). IHC-P ; Human . Read more (PubMed: 24290033) »
  • Popmihajlov Z & Smith KA Negative feedback regulation of T cells via interleukin-2 and FOXP3 reciprocity. PLoS ONE 3:e1581 (2008). Flow Cyt ; Human . Read more (PubMed: 18324310) »

See all 4 Publications for this product

Product Wall

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Sample Human Tissue sections (tonsil)
Specification tonsil
Fixative Formaldehyde
Antigen retrieval step Heat mediated - Buffer/Enzyme Used: Dako Target Retreival Solution
Permeabilization No
Blocking step 5 minutes of peroxidase block then 10 minutes of protein block. These are ready-to-use reagents purchased from Dako as blocking agent for 15 minute(s) · Concentration: 100% · Temperature: 20°C

Mr. Antibody Solutions

Verified customer

Submitted Jan 28 2010

Abcam has not validated the combination of species/application used in this Abreview.
Application Immunocytochemistry/ Immunofluorescence
Sample Human Cell (HeLa)
Specification HeLa
Fixative Paraformaldehyde

Dr. Kirk McManus

Verified customer

Submitted Oct 30 2006

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Western blot
Sample Human Cell lysate - whole cell (Human FOXP3 transfected COS cells)
Specification Human FOXP3 transfected COS cells
Blocking step Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 3%

Abcam user community

Verified customer

Submitted Jan 31 2006

The new rabbit antibody will only have been tested in ELISA and WB at the time of release. We do not have the facilities here for FACS. The goat antibody had been tested in FACS but unfortuantely we have run out of that particular batch. Details of how...

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