• Species Reactivity

  Human

• Specificity

  Detects human IL‑15 R alpha in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human (rh) IL‑2 R alpha, rhIL‑2 R beta, rhIL‑2 R gamma, or rmIL‑15 R alpha is observed.

• Source

  Monoclonal Mouse IgG    _2B Clone # 151303

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  S. frugiperda insect ovarian cell line     Sf 21-derived recombinant human IL‑15 R alpha    
  Ile31-Thr172    
  Accession # EAW86418

• Formulation

  Supplied in a saline solution containing BSA and Sodium Azide.

• Label

  Alexa Fluor 488

Applications

• Recommended    
  Concentration

  Sample

• 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

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-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. Eight isoforms of IL‑15 R alpha mRNA have been identified resulting from alternative splicing events involving different exons. The exclusion of exon 2 results in an IL-15 R alpha isoform that does not bind IL-15. Human IL-15 R alpha DE3 cDNA encodes a 267 aa protein that contains a 30 aa signal sequence, a 175 aa extracellular region containing one N-linked glycosylation site, a 21 aa transmembrane domain and a 41 aa cytoplasmic tail. 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 R beta and IL-2 R gamma _c,  or 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.

• Long Name:

  Interleukin 15 Receptor alpha

• Entrez Gene IDs:

  3601 (Human); 16169 (Mouse)

• Alternate Names:

  CD215 antigen; CD215; IL-15 R alpha; IL-15 receptor subunit alpha; IL15R alpha; IL15RA; IL-15Ra; IL-15R-alpha; interleukin 15 receptor, alpha; interleukin-15 receptor subunit alpha; MGC104179