Animal-Free IL-2 Protein, Mouse (His)

IL-2 Protein is usually produces by antigen-activated CD4+ T cells, CD8+ T cells, NK cells and NKT cells. IL-2 Protein is involved in signaling pathways including JAK/STAT, inosine phosphate 3-kinase /PI3K, and mitogen-activated protein kinase /MAPK. Animal-Free IL-2 Protein, Mouse (His) is the recombinant mouse-derived animal-FreeIL-2 protein, expressed by E. coli , with C-His labeled tag. The total length of Animal-Free IL-2 Protein, Mouse (His) is 149 a.a., with molecular weight of ~18.2 kDa.

IL-2 is a receptor cytokine produced by activated CD4-positive helper T cells and plays its role by activating JAK/STAT, inosine phosphate 3-kinase /PI3K and mitogen-activated protein kinase /MAPK. IL-2 binds to receptor complexes consisting of high affinity trimers IL-2R (IL2RA/CD25, IL2RB/CD122 and IL2RG/CD132) or low affinity dimers IL-2R (IL2RB and IL2RG). IL-2 can increase the cytolytic activity of NK cells. Promote strong proliferation of activated B cells and immunoglobulin production. IL-2 is involved in differentiation and homeostasis of effector T cell subsets, including Th1, Th2, Th17, and memory CD8-positive T cells. IL-2 synthesis is strictly regulated by TCR and CD28 signaling at the mRNA level. It mediates the activation induced cell death (AICD) process. IL-2 can be used in the research of cancer immunotherapy^{[1][2][3][4][5][6]}.

Measure by its ability to induce CTLL-2 cells proliferation. The ED₅₀ for this effect is <10 ng/mL. The specific activity of recombinant mouse IL-2 is approximately >1 x 10⁵ IU/mg

Mouse

E. coli

C-His

P04351 (A21-Q169)

16183  [NCBI]

MAPTSSSTSSSTAEAQQQQQQQQQQQQHLEQLLMDLQELLSRMENYRNLKLPRMLTFKFYLPKQATELKDLQCLEDELGPLRHVLDLTQSKSFQLEDAENFISNIRVTVVKLKGSDNTFECQFDDESATVVDFLRRWIAFCQSIISTSPQ

Approximately 18.2 kDa

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized from a solution containing 1X PBS, pH 7.4.

<0.1 EU per 1 μg of the protein by the LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.