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REACTIVITY SENSITIVITY MW (kDa) SOURCE
55 Rabbit

Product Usage Information

Storage: Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

IL-2Rα Antibody detects endogenous levels of total human IL-2Rα protein.


Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to a region surrounding Ala34 of human IL-2Rα protein. Antibodies were purified by protein A and peptide affinity chromatography.

Interleukin-2 (IL-2) is a T cell stimulatory cytokine best known for inducing T cell proliferation and NK cell proliferation and activation (1,2). IL-2 also promotes peripheral development of regulatory T cells (Tregs) (3,4). Conversely, IL-2 is involved in the activation-induced cell death (AICD) that is observed post T cell expansion by increasing levels of Fas on CD4+ T cells (5). The effects of IL-2 are mediated through a trimeric receptor complex consisting of IL-2Rα, IL-2Rβ, and the common gamma chain, γc (1,2). IL-2Rα binds exclusively to IL-2 with low affinity and increases the binding affinity of the whole receptor complex including IL-2Rβ and γc subunits. IL-15 also binds to IL-2Rβ (1,2). γc is used by other cytokines including IL-4, IL-7, IL-9, IL-15, and IL-21 (1,2). Binding of IL-2 initiates signaling cascades involving Jak1, Jak3, Stat5, and the PI3K/Akt pathways (1,2).


1.  Ma, A. et al. (2006) Annu Rev Immunol 24, 657-79.

2.  Gaffen, S.L. and Liu, K.D. (2004) Cytokine 28, 109-23.

3.  Fehérvari, Z. et al. (2006) Trends Immunol 27, 109-11.

4.  Antony, P.A. et al. (2006) J Immunol 176, 5255-66.

5.  Jaleco, S. et al. (2003) J Immunol 171, 61-8.


Entrez-Gene Id 3559
Swiss-Prot Acc. P01589


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