Mouse splenocytes were untreated (light orange filled histogram) or activated for 24 hours with 50 ng/mL PMA and 500 ng/mL Ca²⁺ionomycin (dark orange filled histogram) then stained with Mouse IL-21 Monoclonal Antibody (Catalog # MAB594) or isotype control antibody (Catalog # MAB0061, open histogram), followed by Allophycocyanin-conjugated Anti-Rat IgG F(ab')₂Secondary Antibody (Catalog # F0113). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with saponin.

Applications for Mouse IL-21 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.

Intracellular Staining by Flow Cytometry

2.5 µg/10⁶ cells
Sample: Mouse splenocytes treated with PMA and Ca²⁺ ionomycin, fixed with paraformaldehyde, and permeabilized with saponin

Western Blot

1 µg/mL
Sample: Recombinant Mouse IL-21 (Catalog # 594-ML)

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

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-21

Interleukin-21 (IL-21) and its receptor appear to play important roles in the regulation of the immune system. IL-21 is most related to IL-2, IL-4, and IL-15. 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 and IL-4 R alpha. Mouse IL-21 is a 146 amino acid (aa) residue protein with a 24 aa signal peptide. Mouse and human IL-21 share 57% aa identity. IL‑21 is expressed by activated T cells. Although not fully elucidated, the IL-2 R gamma ( gamma_c) chain appears to play a role in IL-21 R signaling. The IL-21/IL-21 R interaction appear to play important roles in B and T cell proliferation after antigen stimulation and NK cell maturation.

References

Parrish-Novak, et al. (2000) Nature 408:57.
Ozaki, K. et al. (2000) Proc. Natl. Acad. Sci. USA 97:11439.
Dumoutier, L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:10144.
Asao, H. et al. (2001) J. Immunol. 167:1.

Long Name

Interleukin 21

Alternate Names

CVID11, IL21, Za11

Entrez Gene IDs

59067 (Human); 60505 (Mouse); 365769 (Rat); 442935 (Canine); 100344172 (Rabbit)

Gene Symbol

IL21

UniProt

Q9ES17

Additional IL-21 Products

Product Documents for Mouse IL-21 Antibody

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for Mouse IL-21 Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Mouse IL-21 Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB594

Key Product Details

Validated by

Species Reactivity

Validated:

Cited:

Applications

Validated:

Cited:

Label

Antibody Source

View all IL-21 Antibodies »

Product Specifications

Immunogen

Specificity

Clonality

Host

Isotype

Scientific Data Images for Mouse IL-21 Antibody

Detection of IL‑21 in Activated Mouse Splenocytes by Flow Cytometry.