IL21R Mouse

Source:HEK293 Cells.Physical Appearance:Sterile filtered colorless solution.Biological ActivityMeasured by its ability to inhibit IFN-g secretion using NK-92 human natural killer cells. The ED50 range = 4 ug/ml with mouse IL-2.IL-21 is produced by CD4+ T cells in response to antigenic stimulation. Its action enhances antigen-specific responses of immune cells. The biological effects of IL-21 include induction of differentiation of T-cells-stimulated B-cells into plasma cells and memory B-cells, stimulation (in conjuction) with IL-4 of IgG production, and induction of apoptotic effects in na?ve B-cells and stimulated B-cells in the absence of T-cell signaling. Additionally, IL-21 promotes the anti-tumor activity of CD8+ T-cells and NK cells. IL-21 exerts its effect through binding to a specific type I cytokine receptor, IL-21R, which also contains the gamma chain (?c) found in other cytokine receptors including IL-2, IL-4, IL-7, IL-9 and IL-15. The IL-21/IL-21R interaction triggers a cascade of events which includes activation of the tyrosine kinases JAK1 and JAK3, followed by activation of the transcription factors STAT1 and STAT3.IL21R Mouse Recombinant produced in HEK293 Cells is a single, glycosylated polypeptide chain containing 457amino acids (20-237 a.a) and having a molecular mass of 52 kDa.IL21R is expressed with a 239 amino acid hIgG-His-Tag at C-Terminus and purified by proprietary chromatographic techniques.