Human IL-15 R alpha Alexa Fluor® 488-conjugated Antibody

  • Species Reactivity
  • 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
  • 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
    Accession # EAW86418
  • Formulation
    Supplied in a saline solution containing BSA and Sodium Azide.
  • Label
    Alexa Fluor 488
  • Flow Cytometry
    5 µL/106 cells
    See below
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.
Data Examples
Detection of IL‑15 R alpha in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) either (A) untreated or (B) treated overnight with PHA were stained with Mouse Anti-Human IL‑15 R alpha Alexa Fluor® 488‑conjugated Monoclonal Antibody (Catalog # FAB1471G) and Mouse Anti-Human CD4 APC‑conjugated Monoclonal Antibody (Catalog # FAB3791A). Quadrant markers were set based on control antibody staining (Catalog # IC0041G). View our protocol for Staining Membrane-associated Proteins.
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 receptor subunit alpha; IL15R alpha; IL15RA; IL-15Ra; IL-15R-alpha; interleukin 15 receptor, alpha; interleukin-15 receptor subunit alpha; MGC104179
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG2B Alexa Fluor® 488-conjugated Isotype Control

Ctrl IC0041G  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....
Staining Reagents
Description Application Cat# Citations Images  

Flow Cytometry Staining Buffer (1X)

Flow FC001 3
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Flow Cytometry Mouse Lyse Buffer (10X)

Flow FC003 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Flow Cytometry Human Lyse Buffer (10X)

Flow FC002 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Have you used Human IL-15 R alpha Alexa Fluor® 488-conjugated Antibody?

Submit a review and receive a $25 amazon gift card if you include an image - $10 Amazon card for reviews without an image. Limited to verified customers in USA, Canada and Europe.

Order Details

Contact Information

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

Certificate of Analysis Lookup

The document you requested is not available online. Please enter the Catalog Number and Lot Number below to have a document emailed to you at the address provided

Certificate of Analysis Lookup

Research Areas of Interest
R&D Systems Guarantee


Customer Information