• Species Reactivity

  Human

• Specificity

  Detects human IL-21 R in direct ELISAs and Western blots. In direct ELISAs and Western blots, this antibody does not cross‑react with recombinant mouse IL‑21 R.

• Source

  Monoclonal Mouse IgG    ₁ Clone # 152504

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  S. frugiperda insect ovarian cell line     Sf 21-derived recombinant human IL-21 R    
  Cys20-Pro236    
  Accession # Q9HBE5

• Formulation

  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.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  1 µg/mL

  Recombinant Human IL‑21 R Subunit Fc Chimera (Catalog # )

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Preparation and Storage

• Reconstitution

  Reconstitute at 0.5 mg/mL in sterile PBS.

• Shipping

  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-21 R

Interleukin-21 (IL-21) and its receptor play an important role in the regulation of the immune system. IL-21 R, also called NILR (novel interleukin receptor), is a type I cytokine receptor with 4 conserved cysteine residues and an extracellular WSXWS motif. It is most closely related to IL-2 R beta, IL-4 R alpha, and IL-9 R. The gene for human IL-21 R has been mapped to chromosome 16p12. Human IL-21 R is a 538 amino acid (aa) residue type I transmembrane protein with a 19 aa signal peptide, a 217 aa extracellular domain, a 19 aa transmembrane domain and a 283 aa cytoplasmic domain. IL-21 R is expressed on lymphoid tissues, peripheral B cells and cell lines of T, B, and NK lineage. The common gamma  chain ( gamma _c) is required for IL-21 R signaling. The IL-21/IL-21 R interaction appears to play an important role in B and T cell proliferation after antigen stimulation and NK cell maturation.

• References:

1. Parrish-Novak, et al. (2000) Nature 408:57.

2. Ozaki, K. et al. (2000) Proc. Natl. Acad. Sci. USA 97:11439.

3. Dumoutier, L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:10144.

4. Asao, H. et al. (2001) J. Immunol. 167:1.

• Long Name:

  Interleukin 21 Receptor

• Entrez Gene IDs:

  50615 (Human); 60504 (Mouse)

• Alternate Names:

  CD360 antigen; CD360; IL-21 R; IL-21 receptor; IL21R; IL-21R; interleukin 21 receptor; interleukin-21 receptor; MGC10967; NILR; Novel interleukin receptor