IL-21 Recombinant Protein
| Code | Size | Price |
|---|
| PSI-40-674-2ug | 2ug | £307.00 |
Quantity:
Prices exclude any Taxes / VAT
Overview
Regulatory Status: RUO
Shipping:
Blue Ice or room temp
Storage:
The recombinant protein is stable for at least 2 years from date of receipt at -20°C. Reconstituted protein is stable for at least 3 months when stored in working aliquots with a carrier protein at -20°C. As with any protein, exposing the recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.
Documents
Further Information
Additional Names:
Interleukin-21, Za11
Background:
IL-21 is a pleiotropic cytokine produced by CD4+ T cells in response to antigenic stimulation. Its action generally enhances antigen-specific responses of immune cells. The biological effects of IL-21 include: inducing the differentiation of T cell-stimulated B cells into plasma cells and memory B cells; the stimulation of IgG production in conjunction with IL-4; and the 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 γ chain (γc) 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. Recombinant Human IL-21 is a 15.4 kDa protein consisting of 132 amino acid residues.
Biological Activity:
Determined by its ability to stimulate the proliferation of human ANBL-6 cells. The expected ED50 is < 0.5 ng/ml, corresponding to a specific activity of ? 2 x106 units/mg.
NCBI Gene ID #:
59067
NCBI Official Name:
interleukin 21
NCBI Official Symbol:
IL21
NCBI Organism:
Homo sapiens
Physical State:
Lyophilized
Purity:
> 98% by SDS-PAGE gel and HPLC analyses.
Recombinant Protein Sequence:
#N/A
Source:
E. coli
Swissprot #:
Q9HBE4