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Invitrogen
IL-21 Polyclonal Antibody
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FIGURE: 1 / 1
IL-21 Antibody (PA5-81420) in WB
Western Blot using IL21R Polyclonal Antibody (Product # PA5-81420) at 1:500 dilution. Lane A: Hl-60 Whole Cell Lysate. Lysates/proteins at 30 μg per lane. Secondary Goat Anti-Rabbit IgG H&L (DyLight™ 800) at 1:10,000 dilution. Developed using the Odyssey technique. Performed under reducing conditions. Predicted band size: 17 kDa. Observed band size: 23 kDa. (We are unsure of the identity of these extra bands).
Please note: We are reviewing Western blot images included in the antibody testing data in our catalog, including those provided by third parties. Unless expressly labeled or annotated as “raw-unedited”, Western blot images included in the antibody testing data in our catalog may have been edited, optimized or otherwise adjusted for presentation.
Product Details
PA5-81420
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Mouse
Host/Isotype
Rabbit
/ IgG
Class
Polyclonal
Type
Antibody
Immunogen
Recombinant Mouse IL-21 protein (Pro25-Ser146)
Conjugate
Unconjugated
Unconjugated
Unconjugated
Form
Liquid
Purification
Protein A, Antigen affinity chromatography
Storage buffer
PBS
Contains
no preservative
Storage conditions
Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Product Specific Information
This product is preservative free. It is recommended to add sodium azide to avoid contamination (final concentration 0.05%-0.1%).
This antibody has specificity for Mouse IL-21.
Target Information
IL-21 is a 17 kDa immunomodulatory cytokine produced mainly by Natural Killer Cells (NKT), T helper (Th) 17 and T follicular helper (TFH) cells. In TFH cells, IL-21 expression leads to autocrine signaling through the IL-21 receptor (IL-21R) and STAT3, which leads to additional transcriptional activation by Bcl6. As with IFN gamma for Th1 and IL-4 for Th2 cells, IL-21 is critical for TFH cell development and effector function. IL-21 plays a role in T cell-dependent B cell differentiation into plasma cells and memory cells, stimulation of IgG production and induction of apoptotic signaling in naive B cells. In Th17 cells, IL-21 expression and autocrine feedback through STAT3, IRF4 and ROR gamma t lead to upregulation of the IL-23R, thereby preparing Th17 cells for maturation and maintenance by the inflammatory cytokine IL-23. While upregulating IRF4 and ROR gamma t, IL-21 also mediates the downregulation of Foxp3. IL-21 deficient mice are protected from developing colitis upon chemical treatment by their inability to upregulate Th17-associated molecules. In comparison, elevated levels of IL-21 are present in chemically-induced colitis mouse models.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: CX2; il 21; IL-21; ILN; Interleukin; Interleukin-21; Interleukin21
Gene Aliases: IL-21; Il21
UniProt ID: (Mouse) Q9ES17
Entrez Gene ID: (Mouse) 60505
B cell apoptotic process
positive regulation of cytokine production
positive regulation of natural killer cell cytokine production
immune response
positive regulation of cell proliferation
positive regulation of B cell proliferation
positive regulation of interleukin-10 production
positive regulation of interleukin-17 production
positive regulation of natural killer cell differentiation
positive regulation of T cell proliferation
tyrosine phosphorylation of Stat3 protein
positive regulation of tyrosine phosphorylation of Stat1 protein
positive regulation of tyrosine phosphorylation of Stat3 protein
positive regulation of interferon-gamma biosynthetic process
positive regulation of B cell differentiation
positive regulation of natural killer cell mediated cytotoxicity
cell maturation
Disclaimer
Clicking the images or links will redirect you to a website hosted by BenchSci that provides third-party scientific content. Neither the content nor the BenchSci technology and processes for selection have been evaluated by us; we are providing them as-is and without warranty of any kind, including for use or application of the Thermo Fisher Scientific products presented.
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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