| Species |
Human |
| Protein Construction |
Expressed with an N-terminal Met.
| Poly-His |
IL-15 (Asn49-Ser162)
Accession # P40933 |
| N-term |
C-term |
|
| Purity |
> 95% as analyzed by SDS-PAGE |
| Endotoxin Level |
< 0.2 EU/μg of protein by gel clotting method |
| Biological Activity |
ED50 < 0.5 ng/ml, determined by the dose-dependent stimulation of the proliferation of CTLL-2 cells, corresponding to a specific activity of > 2.0 × 106 units/mg. |
| Expression System |
E. coli |
| Apparent Molecular Weight |
~13.6 kDa, on SDS-PAGE under reducing conditions. |
| Formulation |
Lyophilized after extensive dialysis against PBS. |
| Reconstitution |
It is recommended that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute the lyophilized powder in ddH₂O or PBS up to 100 μg/ml. |
| Storage & Stability |
Upon receiving, this product remains stable for up to 6 months at lower than -70°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. For long term storage it is recommended that a carrier protein (example 0.1% BSA) be added. Avoid repeated freeze-thaw cycles. |
| Target Background |
Interleukin-15 (IL-15) is a cytokine with structural similarity to IL-2. Like IL-2, IL-15 binds to and signals through a complex composed of IL-2/IL-15 receptor beta chain (CD122) and the common gamma chain (gamma-C, CD132). IL-15 is secreted by mononuclear phagocytes (among other cells) following infection by virus. This cytokine induces cell proliferation of natural killer cells, which are cells of the innate immune system whose principal role is to kill virally infected cells. IL-15 can stimulate the proliferation of T-lymphocytes. Stimulation by IL-15 occurs following its interaction with IL-15Rα. This interaction may enhance IL-15’s interaction with IL15Rβγc. |
| Synonyms |
IL15; IL-T; interleukin 15 |
For laboratory research use only. Direct human use, including taking orally and injection and clinical use are forbidden.
