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            • Primary Antibodies ›
            • FOXP3 Antibodies

            Invitrogen

            FOXP3 Monoclonal Antibody (FJK-16s), PE-Cyanine5, eBioscience™

            Advanced Verification
            97 Published Figures
            214 References
            View all (162) FOXP3 antibodies
            Datasheet
            Protocols
            Questions & Answers
            Promotion Available
            Learn more
            Catalog # 15-5773-82
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            Price (USD)
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            Ends: 01-Jul-2025
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            Cite FOXP3 Monoclonal Antibody (FJK-16s), PE-Cyanine5, eBioscience™

            • Antibody Testing Data (1)
            • Published Figures (97)
            • Advanced Verification (1)
            Application
            FOXP3 Antibody in Flow Cytometry (Flow)
            Group 53 Created with Sketch.

            FIGURE: 1 / 99

            FOXP3 Antibody (15-5773-82) in Flow

            Mouse (BALB/c) splenocytes were surface-stained with Anti-Mouse CD4 FITC (Product # 11-0041-82) and Anti-Mouse CD25 PE (Product # 12-0251-82), and subsequently with Anti-Mouse/Rat Foxp3 PE-Cyanine5 or Rat IgG2a Isotype Control PE-Cyanine5 (Product # 15-4321-80) using the Foxp3/Transcription Factor Buffer Set (Product # 00-5523-00).The dot plot on the left demonstrates co-staining of CD4 and FJK-16s, while the right plot demonstrates co-staining of CD25 and FJK-16s.Cells in the lymphocyte gate were used for analysis.
            View Product

            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
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            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody in Flow Cytometry (Flow)
            FOXP3 Antibody

            Product Details

            15-5773-82

            Applications
            Tested Dilution
            Publications

            Flow Cytometry (Flow)

            1 µg/test
            View 214 publications 214 publications
            Product Specifications

            Species Reactivity

            Bovine, Dog, Cat, Mouse, Pig, Rat

            Published species

            Bovine, Hamster, Mouse, Rat

            Host/Isotype

            Rat / IgG2a, kappa

            Recommended Isotype Control

            Rat IgG2a kappa Isotype Control (eBR2a), PE-Cyanine5, eBioscience™

            Class

            Monoclonal

            Type

            Antibody

            Clone

            FJK-16s

            Conjugate

            PE-Cyanine5
            • Unconjugated
            • Alexa Fluor 488 
            • Alexa Fluor 532 
            • Alexa Fluor 561
            • Alexa Fluor 660 
            • Alexa Fluor 700 
            • APC 
            • Biotin 
            • Brilliant Violet 421
            • Brilliant Violet 605
            • Brilliant Violet 711
            • Brilliant Violet 786
            • eFluor 450
            • eFluor 506
            • eFluor 570
            • eFluor 615
            • eFluor 660
            • FITC
            • PE 
            • PE-Cyanine5.5
            • PE-Cyanine7
            • PE-eFluor 610
            • PerCP-Cyanine5.5
            • PerCP-eFluor 710
            • Request custom conjugation

            Excitation/Emission Max

            568/666 nm View spectra spectra

            Form

            Liquid

            Concentration

            0.2 mg/mL

            Purification

            Affinity chromatography

            Storage buffer

            PBS, pH 7.2

            Contains

            0.09% sodium azide

            Storage conditions

            4°C, store in dark, DO NOT FREEZE!

            Shipping conditions

            Ambient (domestic); Wet ice (international)

            RRID

            AB_468806

            Product Specific Information

            Description: The FJK-16s antibody reacts with mouse, rat, dog, porcine, bovine and cat Foxp3 also known as FORKHEAD BOX P3, SCURFIN, and JM2; cross reactivity of this antibody to other proteins has not been determined. Foxp3, a 49-55 kDa protein, is a member of the forkhead/winged-helix family of transcriptional regulators, and was identified as the gene defective in 'scurfy' (sf) mice. Constitutive high expression of foxP3 mRNA has been shown in CD4+CD25+ regulatory T cells (Treg cells), and ectopic expression of foxp3 in CD4+CD25- cells imparts a Treg phenotype in these cells.

            Immunoblotting with FJK-16s antibody has mapped the epitope to amino acids 75-125 of the mouse Foxp3 protein. In the human, this region has been shown to be alternatively spliced at the mRNA level. Both the alternatively-spliced and non-spliced isoforms are present in the CD4+CD25+ subset of lymphocytes. Preliminary RT-PCR experiments have not revealed this alternatively-spliced isoform in mouse splenocytes, suggesting different gene regulation in the mouse and human.

            Applications Reported: This FJK-16s antibody has been reported for use in intracellular flow cytometric analysis.

            Applications Tested: This FJK-16s antibody has been tested by intracellular staining and flow cytometric analysis of mouse splenocytes using the Foxp3/Transcription Factor Buffer Set (Product # 00-5523-00) and protocol. Please see BestProtocols® Section (Staining intracellular Antigens for Flow Cytometry) for staining protocol (refer to Protocol B: One-step protocol for intracellular (nuclear) proteins). This antibody can be used at less than or equal to 1 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

            Light sensitivity: This tandem dye is sensitive photo-induced oxidation. Please protect this vial and stained samples from light.

            Fixation: Samples can be stored in IC Fixation Buffer (Product # 00-8222) (100 µL cell sample + 100 µL IC Fixation Buffer) or 1-step Fix/Lyse Solution (Product # 00-5333) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation. Some generalizations regarding fluorophore performance after fixation can be made, but clone specific performance should be determined empirically.

            Excitation: 488-561 nm; Emission: 667 nm; Laser: Blue Laser, Green Laser, Yellow-Green Laser.

            Filtration: 0.2 µm post-manufacturing filtered.

            Target Information

            FOXP3 (Forkhead box protein 3) is a member of the forkhead/winged-helix family of transcriptional regulators, highly conserved across mammals, and essential for normal immune homeostasis. FOXP3 is 381 amino acids long, stably and constitutively expressed at a high level in CD25 + CD4 positive regulatory T cells, a low level in CD4-positive/CD25-negative cells, and is absent in CD4-negative/CD8-positive T cells. FOXP3 may be a master regulatory gene, and a more specific marker of regulatory T cells. Defects in the gene encoding FOXP3 protein cause the scurfy phenotype in mice. In humans FOXP3 defects play a role in IPEX syndrome (immune dysfunction, polyendocrinopathy, enteropathy, X-linked syndrome), also known as X-linked autoimmunity-allergic dysregulation (XLAAD) syndrome. Transcript variants of FOXP3 encoding different isoforms have been identified. In human breast and colon cancer cells, expression of FOXP3 is regulated by p53 in response to the DNA damage.

            For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.

            How to build a flow cytometry experiment with Invitrogen Flow Cytometry Panel Builder
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            Bioinformatics

            Protein Aliases: Forkhead box protein P3; forkhead/winged helix transcription factor 3; Foxp3; MGC141961; MGC141963; RP23-54C14.1; Scurfin; scurfy

            View more View less

            Gene Aliases: Foxp3; JM2; RGD1562112; scurfin; sf

            View more View less

            UniProt ID: (Mouse) Q99JB6

            View more View less

            Entrez Gene ID: (Dog) 491876, (Pig) 444998, (Bovine) 506053, (Cat) 100037405, (Mouse) 20371, (Rat) 317382

            View more View less

            Function(s)

            core promoter binding nucleic acid binding DNA binding transcription factor activity, sequence-specific DNA binding transcription factor activity, RNA polymerase II distal enhancer sequence-specific binding transcription corepressor activity protein binding histone acetyltransferase binding protein homodimerization activity histone deacetylase binding sequence-specific DNA binding metal ion binding NFAT protein binding RNA polymerase II transcription factor activity, sequence-specific DNA binding molecular_function

            Process(es)

            negative regulation of transcription from RNA polymerase II promoter B cell homeostasis cytokine production myeloid cell homeostasis CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation CD4-positive, CD25-positive, alpha-beta regulatory T cell lineage commitment T cell mediated immunity tolerance induction tolerance induction to self antigen regulation of immunoglobulin production positive regulation of T cell tolerance induction regulation of T cell anergy positive regulation of T cell anergy negative regulation of chronic inflammatory response negative regulation of T cell cytokine production positive regulation of peripheral T cell tolerance induction transcription, DNA-templated regulation of transcription, DNA-templated regulation of transcription from RNA polymerase II promoter transcription from RNA polymerase II promoter negative regulation of cell proliferation anatomical structure morphogenesis positive regulation of gene expression negative regulation of histone deacetylation negative regulation of NF-kappaB transcription factor activity negative regulation of interferon-gamma production negative regulation of interleukin-10 production negative regulation of interleukin-17 production negative regulation of interleukin-2 production negative regulation of interleukin-4 production negative regulation of interleukin-5 production negative regulation of interleukin-6 production negative regulation of tumor necrosis factor production positive regulation of interleukin-4 production negative regulation of CREB transcription factor activity positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation positive regulation of transforming growth factor beta1 production positive regulation of immature T cell proliferation in thymus positive regulation of histone acetylation negative regulation of histone acetylation negative regulation of cytokine biosynthetic process T cell activation negative regulation of T cell proliferation negative regulation of sequence-specific DNA binding transcription factor activity regulatory T cell differentiation negative regulation of interferon-gamma biosynthetic process negative regulation of interleukin-2 biosynthetic process positive regulation of regulatory T cell differentiation negative regulation of transcription, DNA-templated positive regulation of transcription, DNA-templated positive regulation of transcription from RNA polymerase II promoter negative regulation of isotype switching to IgE isotypes regulation of isotype switching to IgG isotypes negative regulation of lymphocyte proliferation negative regulation of cytokine secretion negative regulation of inflammatory response negative regulation of immune response T cell receptor signaling pathway negative regulation of T-helper 17 cell differentiation biological_process response to virus
            It has to be done as per old AB suggested Products section.
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