< 0.01 EU per 1 ug of the protein by the LAL method.
Activity:
Measure by its ability to induce MO7e human megakaryocytic leukemic proliferation. The ED50 for this effect is 0.5 - 3 ng/mL. The specific activity of recombinant human IL-15 is approximately 1.5 x 108 IU/ mg.
Quality Control Testing:
SDS-PAGE Stained with Coomassie Blue
Recommend Usage:
SDS-PAGE The optimal working dilution should be determined by the end user.
Storage Buffer:
Lyophilized from a solution containing 1X PBS, pH 8.0. It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 ug/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.Please use within one month after protein reconstitution.
Storage Instruction:
Store at -20°C, lyophilized protein is stable for 1 year. After reconstitution with deionized water, store at -20 to -80°C. Aliquot to avoid repeated freezing and thawing.
The protein encoded by this gene is a cytokine that regulates T and natural killer cell activation and proliferation. This cytokine and interleukine 2 share many biological activities. They are found to bind common hematopoietin receptor subunits, and may compete for the same receptor, and thus negatively regulate each other's activity. The number of CD8+ memory cells is shown to be controlled by a balance between this cytokine and IL2. This cytokine induces the activation of JAK kinases, as well as the phosphorylation and activation of transcription activators STAT3, STAT5, and STAT6. Studies of the mouse counterpart suggested that this cytokine may increase the expression of apoptosis inhibitor BCL2L1/BCL-x(L), possibly through the transcription activation activity of STAT6, and thus prevent apoptosis. Two alternatively spliced transcript variants of this gene encoding the same protein have been reported. [provided by RefSeq