Invitrogen™ IL-21 Recombinant Rabbit Monoclonal Antibody (012)

Rabbit Recombinant Monoclonal Antibody

Supplier:  Invitrogen™ MA530804

Catalog No. PIMA530804

Description

This product is preservative free. It is recommended to add sodium azide to avoid contamination (final concentration 0.05%-0.1%). Recombinant rabbit monoclonal antibodies are produced using in vitro expression systems. The expression systems are developed by cloning in the specific antibody DNA sequences from immunoreactive rabbits. Then, individual clones are screened to select the best candidates for production. The advantages of using recombinant rabbit monoclonal antibodies include: better specificity and sensitivity, lot-to-lot consistency, animal origin-free formulations, and broader immunoreactivity to diverse targets due to larger rabbit immune repertoire. This antibody has specificity for Mouse IL-21.

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.

Specifications

• Antigen: IL-21
• Classification: Recombinant Monoclonal
• Concentration: 1 mg/mL
• Formulation: PBS with no preservative
• Gene Accession No.: Q9ES17
• Gene Symbols: IL21
• Immunogen: Recombinant Mouse IL-21 Protein (Pro25-Ser146).
• Quantity: 100 μL
• Primary or Secondary: Primary
• Target Species: Mouse
• Product Type: Antibody
• Isotype: IgG

• Applications: ELISA
• Clone: 012
• Conjugate: Unconjugated
• Gene: IL21
• Gene Alias: CVID11; CX2; il 21; IL21; IL-21; ILN; Interleukin; interleukin 21; Interleukin21; interleukin-21; interleukin-21 isoform; porcine interleukin-21; Za11
• Host Species: Rabbit
• Purification Method: Protein A
• Regulatory Status: RUO
• Gene ID (Entrez): 60505
• Content And Storage: Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
• Form: Liquid