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活动日期:2026.4.20-2026.5.31

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Species    
Human        

Protein Construction    
IL-15 (Asn49-Ser162), Accession # P40933.1        

Tag    
No tag

Expression System    
E. coli        

Purity    
> 95% as determined by SDS-PAGE

Predicted Molecular Mass   
13 kDa

SDS-PAGE   
13 kDa, under reducing conditions

Endotoxin    
<0.1 EU/μg of the protein by the LAL method.        

Biological Activity    
Measured in a cell proliferation assay using CTLL-2 mouse cytotoxic T cells. The ED50 for this effect is 0.01-0.3 ng/mL.                

Formulation    
Lyophilized from a 0.22μm filtered solution in 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 at 100 μg/mL in sterile deionized water  

Storage&Stability    
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.        
12 months from date of receipt, at lower than -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
3 months, -20 °C under sterile conditions after reconstitution.

Usage    
Research use only

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.