Search Thermo Fisher Scientific
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.
FIGURE: 1 / 3
IL-21 Antibody (500-P191BT-25UG) in WB
Western Blot: To detect Human IL-21 by Western Blot analysis IL-21 Polyclonal Antibody, Biotin (Product # 500-P191BT-1MG) can be used at a concentration of 0.1-0.2 µg/mL. Used in conjunction with compatible secondary reagents the detection limit for Recombinant Human IL-21 is 1.5-3.0 ng/lane, under either reducing or non-reducing conditions.
Product Details
500-P191BT-25UG
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human
Published species
Human
Host/Isotype
Rabbit
Class
Polyclonal
Type
Antibody
Immunogen
E.coli-derived Recombinant Human IL-21
Conjugate
Form
Lyophilized
Concentration
0.1-1.0 mg/mL
Purification
Antigen affinity chromatography
Storage buffer
PBS
Contains
no preservative
Storage conditions
-20°C
Shipping conditions
Ambient
RRID
AB_2929752
Product Specific Information
AA Sequence of recombinant protein: MQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS.
Preparation: Produced from sera of rabbits immunized with highly pure Recombinant Human IL-21. Anti-Human IL-21-specific antibody was purified by affinity chromatography and then biotinylated.
Sandwich ELISA: To detect hIL-21 by sandwich ELISA (using 100 µL/well antibody solution) a concentration of 0.25-1.0 µg/mL of this antibody is required. This biotinylated polyclonal antibody, in conjunction with PeproTech Polyclonal Anti-Human IL-21 (500-P191) as a capture antibody, allows the detection of at least 0.2-0.4 ng/well of Recombinant hIL-21.
Western Blot: To detect Human IL-21 by Western Blot analysis this antibody can be used at a concentration of 0.1-0.2 µg/mL. Used in conjunction with compatible secondary reagents the detection limit for Recombinant Human IL-21 is 1.5-3.0 ng/lane, under either reducing or non-reducing conditions.
500-P191BT-1MG will be provided as 2 x 500 µg
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.
Bioinformatics
Protein Aliases: CX2; il 21; IL-21; ILN; Interleukin; Interleukin-21; interleukin-21 isoform; Interleukin21; Za11
Gene Aliases: CVID11; IL-21; IL21; Za11
UniProt ID: (Human) Q9HBE4
Entrez Gene ID: (Human) 59067
positive regulation of cytokine production
immune response
signal transduction
positive regulation of cell proliferation
positive regulation of B cell proliferation
positive regulation of interleukin-17 production
positive regulation of tissue remodeling
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 natural killer cell mediated cytotoxicity
cell maturation
positive regulation of inflammatory response
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.*
Learn more
We're here to help
Get expert recommendations for common problems or connect directly with an on staff expert for technical assistance related to applications, equipment and general product use.
Contact tech support