Mouse IL-21 PE-conjugated Antibody

(2 citations)   
  • Species Reactivity
  • Specificity
    Detects mouse IL-21 in Western blots. Does not cross-react with recombinant human IL‑21, recombinant mouse (rm) IL‑15, or rmIL‑12.
  • Source
    Monoclonal Rat IgG2B Clone # 149204
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    E. coli-derived recombinant mouse IL‑21
    Accession # Q9ES17
  • Formulation
    Supplied in a saline solution containing BSA and Sodium Azide.
  • Label
  • Intracellular Staining by Flow Cytometry
    10 µL/106 cells
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Intracellular Staining by Flow Cytometry

Detection of IL‑21 in Mouse Splenocytes by Flow Cytometry. Mouse splenocytes either untreated (light orange filled histogram) or treated with PMA and Calcium Ionomycin (dark orange filled histogram) were stained with Rat Anti-Mouse IL‑21 PE‑conjugated Monoclonal Antibody (Catalog # IC594P, filled histogram) or isotype control antibody (Catalog # IC013P, open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.

Preparation and Storage
  • Shipping
    The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
  • Stability & Storage
    Protect from light. Do not freeze.
    • 12 months from date of receipt, 2 to 8 °C as supplied.
Background: IL-21

Interleukin-21 (IL-21) and its receptor appear to play important roles in the regulation of the immune system. IL-21 is most closely related to IL-2, IL-4, and IL-15. IL-21 R, also called NILR (Novel Interleukin Receptor), is a type I cytokine receptor with 4 conserved cysteine residues and an extracellular WSXWS motif. It is most closely related to IL-2 R beta and IL-4 R alpha. Mouse IL-21 is a 146 amino acid (aa) residue protein with a 24 aa signal peptide. Mouse and human IL-21 share 57% aa identity. IL‑21 is expressed by activated T cells. Although not fully elucidated, the IL-2 R gamma ( gamma c) chain appears to play a role in IL-21 R signaling. The IL-21/IL-21 R interaction appears to play important roles in B and T cell proliferation after antigen stimulation and NK cell maturation.

  • References:
    1. Parrish-Novak, J. et al. (2000) Nature 408:57.
    2. Ozaki, K. et al. (2000) Proc. Natl. Acad. Sci. USA 97:11439.
    3. Dumoutier, L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:10144.
    4. Asao, H. et al. (2001) J. Immunol. 167:1.
  • Long Name:
    Interleukin 21
  • Entrez Gene IDs:
    59067 (Human); 60505 (Mouse); 365769 (Rat); 442935 (Canine); 100344172 (Rabbit)
  • Alternate Names:
    IL21; IL-21Za11interleukin-21; interleukin 21; interleukin-21 isoform
Related Research Areas

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

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Sample Type
  1. Enhanced GITR/GITRL interactions augment IL-27 expression and induce IL-10-producing Tr-1 like cells.
    Authors: Carrier Y, Whitters MJ, Miyashiro JS, LaBranche TP, Ramon HE, Benoit SE, Ryan MS, Keegan SP, Guay H, Douhan J, Collins M, Dunussi-Joannopoulos K, Medley QG
    Eur. J. Immunol., 2012;42(6):1393-404.
    Species: Mouse
    Sample Type: whole cells
    Application: Flow
  2. ICOS expression by effector T cells influences the ability of regulatory T cells to inhibit anti-chromatin B cell responses in recipient mice.
    Authors: Hondowicz BD, Batheja AO, Metzgar MH
    J. Autoimmun., 2010;34(4):460-8.
    Species: Mouse
    Sample Type: Whole Cells
    Application: Flow
Isotype Controls
Description Application Cat# Citations Images  

Rat IgG2B PE-conjugated Antibody

Ctrl IC013P 2  
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Staining Reagents
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Flow Cytometry Permeabilization/Wash Buffer I (1X)

Flow FC005 4
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Flow Cytometry Fixation Buffer (1X)

Flow FC004 3
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Flow Cytometry Fixation & Permeabilization Buffer Kit I

Flow FC009
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Flow Cytometry Fixation/Permeabilization Buffer I (1X)

Flow FC007
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