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Human IL-21R Antibody

R&D Systems, part of Bio-Techne | Catalog # AF991

R&D Systems, part of Bio-Techne
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AF991
AF991-SP

Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

CyTOF-ready, Flow Cytometry, Western Blot

Cited:

Flow Cytometry, Functional Assay, Immunohistochemistry-Frozen, Neutralization, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Goat IgG

Product Specifications

Immunogen

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

Specificity

Detects human IL‑21 R Subunit in direct ELISAs and Western blots. In direct ELISAs, approximately 45% cross-reactivity with recombinant mouse IL‑21 R is observed.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Applications for Human IL-21R Antibody

Application
Recommended Usage

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

2.5 µg/106 cells
Sample: Human whole blood CD19+ B cells

Western Blot

0.1 µg/mL
Sample: Recombinant Human IL-21 R Subunit Fc Chimera (Catalog # 991-R2)
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Reconstitution Buffer Available:
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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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-21R

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 ( gammac) 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

Alternate Names

CD360, IL-21 R, IL21R, NILR

Entrez Gene IDs

50615 (Human); 60504 (Mouse); 102135042 (Cynomolgus Monkey); 705759 (Rhesus Macaque)

Gene Symbol

IL21R

UniProt

Additional IL-21R Products

Product Documents for Human IL-21R Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human IL-21R Antibody

For research use only

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