Human IL-15R alpha Alexa Fluor® 647-conjugated Antibody

Catalog # Availability Size / Price Qty
FAB1471R-100UG
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Human IL-15R alpha Alexa Fluor® 647-conjugated Antibody Summary

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 IgG2b Clone # 151303
Immunogen
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human IL‑15 R alpha
Ile31-Thr172
Accession # EAW86418
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 647 (Excitation= 650 nm, Emission= 668 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
Human peripheral blood mononuclear cells treated with PHA

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.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: IL-15R 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 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.

References
  1. Anderson, D.M. et al. (1995) J. Biol. Chem. 270:29862.
  2. Bulfone-Paus, S. et al. (1999) FASEB 13:1575.
  3. Waldemann, T.A. and Y. Tagaya (1999) Ann. Rev. Immunol. 17:19.
  4. Dubois, S. et al. (1999) J. Biol. Chem. 274:26978.
Long Name
Interleukin 15 Receptor alpha
Entrez Gene IDs
3601 (Human); 16169 (Mouse); 102121571 (Cynomolgus Monkey)
Alternate Names
CD215 antigen; CD215; IL15 R alpha; IL-15 R alpha; IL-15 receptor subunit alpha; IL-15R alpha; IL15RA; IL-15Ra; IL-15R-alpha; interleukin 15 receptor, alpha; interleukin-15 receptor subunit alpha; MGC104179

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