Recombinant Human IL21 (E. coli)
Cat. No.
Z100495
Unit
Price
$293.00
Specifications
| Description | IL-21 stimulates proliferation of B cell stimulated by crosslinking of the CD40 antigen. It inhibits proliferation stimulated by IL-4 plus anti-IgM. IL-21 augments stimulation of the proliferation of naive CD45RA(+) but not memory CD45R0(+) T cells mediated by engagement of CD3. IL-21 stimulates the proliferation of bone marrow progenitor cells and the expression of the natural killer cell marker CD56 in the presence of IL-15. The Interleukin-21 receptor is closely related to human IL-2 beta receptor. The receptor contains a WSXWS motif in the extracellular region, typical of type 1 cytokine receptors. The receptor is expressed on natural killer cells, T cells, and B cell line. The functional signaling complex activates Janus kinases JAK1, JAK3, and the STAT proteins STAT1, and STAT3. |
| SKU | Z100495 |
| Unit quantity | 10 µg |
| Family | Other Interleukins |
| Aliases |
IL-21, Za11 Recombinant Human Interleukin-21 (IL21) |
| Gene Symbol | IL21 |
| Gene ID | 59067 |
| Accession Number | Q9HBE4 |
| Source | E. coli |
| Species | Human (H. sapiens) |
| Appearance | Lyophilized Powder |
| Molecular Weight | 15 kDa |
| Endotoxin Level | <1.0 EU/µg of recombinant protein as determined by the LAL method. |
| Purity | >95% as determined by SDS-PAGE |
| Formulation | Recombinant Interleukin-21 was lyophilized from a 0.2 μm filtered PBS solution pH 7.5. |
| Function | The ED(50) was determined by the dose-dependent proliferation of HuT-78 Cells and was found to be <0.05ng/mL. |
| Reconstitution | A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers. |
| Storage | The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at 2° - 8°C for one month, or at -20°C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles. |
| Usage | For research use only. Not for diagnostic or therapeutic use. |
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