| Description : |
Interleukin-21 (IL21) belongs to the IL-15/IL-21 family. It is a cytokine with immunoregulatory activity. Cytokines are proteinaceous signaling compounds that are major mediators of the immune response. They control many different cellular functions including proliferation, differentiation and cell survival/apoptosis but are also involved in several pathophysiological processes including viral infections and autoimmune diseases. Interleukin-21 is a cytokine that has potent regulatory effects on cells of the immune system, including natural killer (NK) cells and cytotoxic T cells that can destroy virally infected or cancerous cells. This cytokine induces cell division/proliferation in its target cells. |
| Source : |
Escherichia coli |
| Species : |
Mouse |
| Tag : |
His |
| Form : |
Lyophilized powder |
| AA Sequence : |
MHKSSPQGPDRLLIRLRHLIDIVEQ LKIYENDLDPELLSAPQDVKGHCEH AAFACFQKAKLKPSNPGNNKTFIID LVAQLRRRLPARRGGKKQ
KHIAKCPSCDSYEKRTPKEFLERLK WLLQKMIHQHLS with polyhistidine tag at the C-terminus |
| Endotoxin : |
<0.1 EU per 1 μg of the protein by the LAL method. |
| Bio-activity : |
Measure by its ability to enhance IFN gamma secretion in NK-92 cells. The ED50 for this effect is <6 ng/mL. The specific activity of recombinant mouse IL-21 is > 1.6 x 10^5 IU/mg. |
| Purity : |
>95% as determined by SDS-PAGE. Ni-NTA chromatography |
| Storage Buffer : |
The protein was lyophilized from a solution containing 1X PBS, pH 7.4. |
| Reconstitution : |
It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved. |
| Storage : |
Lyophilized protein should be stored at -20°C. Upon reconstitution, protein aliquots should be stored at -20°C or -80°C. |
| Notes : |
Please use within one month after protein reconstitution. |
