Detects mouse IL-15 R alpha in direct ELISAs and Western blots. In direct ELISAs, approximately 5% cross-reactivity with recombinant human (rh) IL‑15 R alpha is observed and less than 1% cross-reactivity with rhIL-2 R alpha, recombinant mouse (rm) IL-2 R beta, and rmIL-2 R gamma is observed.
Polyclonal Goat IgG
Mouse myeloma cell line NS0-derived recombinant mouse IL-15 R alpha Gly33-Lys205 Accession # Q60819
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Recombinant Mouse IL‑15 R alpha Fc Chimera (Catalog # 551-MR)
2.5 µg/106 cells
EL‑4 mouse lymphoblast cell line
Measured by its ability to neutralize IL‑15-induced proliferation in the CTLL‑2 mouse cytotoxic T cell line. Gearing, A.J.H. and C.B. Bird (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 276. The Neutralization Dose (ND50) is typically 0.3-1.5 µg/mL in the presence of 0.8 ng/mL Recombinant Human IL‑15.
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.
Cell Proliferation Induced by IL‑15 and Neutralization by Mouse IL‑15 R alpha Antibody. Recombinant Human IL‑15 (Catalog # 247-IL) stimulates proliferation in the CTLL‑2 mouse cytotoxic T cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL‑15 (0.8 ng/mL) is neutralized (green line) by increasing concentrations of Mouse IL‑15 R alpha Antigen Affinity-purified Polyclonal Antibody (Catalog # AF551). The ND50 is typically 0.3-1.5 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: IL-15 R alpha
Interleukin 15 receptor alpha (IL-15 R alpha ) is a high affinity receptor that specifically binds IL-15 with high affinity and associates as a heterotrimer with the IL-2 receptors beta and gamma subunits to initiate signal transduction. IL-15 R alpha is expressed on a wide variety of T cells and B cells as well as non-lymphoid cells. IL‑15 R alpha is a 58-60 kDa protein that shares structural similarities to the IL-2 R alpha protein. IL-15 R alpha and IL-2 R alpha genes also share similar intron-exon organization and are closely linked on human chromosome 10p14-p15. Human IL-15 R alpha shares 45% amino acid (aa) homology with the mouse form of the receptor. Signaling of IL-15 can occur in one of three ways; through the heterotrimeric complex of IL-15 R alpha, IL-2 R beta, and IL-2 R gamma c, through the heterodimeric complex of IL-2 receptors beta and gamma common, through a novel 60-65 kDa IL-15 RX subunit found on mast cells. The binding of IL-15 to IL-15 R alpha has been reported to antagonize the TNF-alpha -mediated apoptosis in fibroblasts by competing with TNF RI for TRAF2 binding.
Anderson, D.M. et al. (1995) J. Biol. Chem. 270:29862.
Bulfone-Paus, S. et al. (1999) FASEB 13:1575.
Waldemann, T.A. and Y. Tagaya (1999) Ann. Rev. Immunol. 17:19.
Dubois, S. et al. (1999) J. Biol. Chem. 274:26978.
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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