Species Reactivity
Mouse
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 IgG 2B Clone # 149204
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
E. coli-derived recombinant mouse IL‑21
Pro25-Ser146
Accession # Q9ES17Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 488
Applications
Recommended
ConcentrationSample
Intracellular Staining by Flow Cytometry
5 µL/10 6 cells
See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. are available in the Technical Information section on our website.
Data Examples
Intracellular Staining by Flow Cytometry | Detection of IL‑21 in Th17-stimulated Mouse Splenocytes by Flow Cytometry. Th17-stimulated mouse splenocytes was stained with Rat Anti-Mouse IL‑21 Alexa Fluor® 488‑conjugated Monoclonal Antibody (Catalog # IC594G, filled histogram) or isotype control antibody (Catalog # , open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # ) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # ). View our protocol for . |
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 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 appear to play important roles in B and T cell proliferation after antigen stimulation and NK cell maturation.
References:
Parrish-Novak, J. et al. (2000) Nature 408:57.
Ozaki, K. et al. (2000) Proc. Natl. Acad. Sci. USA 97:11439.
Dumoutier, L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:10144.
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-21; IL-21Za11interleukin-21; interleukin 21; interleukin-21 isoform
