Recombinant Human Interleukin-2 GMP
IL-2 is a powerful immunoregulatory lymphokine produced by T-cells in response to antigenic or mitogenic stimulation. It is expressed by CD4+ and CD8+ T cells, γδ T cells, B cells, dendritic cells, and eosinophils. IL-2/IL-2R signaling is required for T-cell proliferation and other fundamental functions which are essential for the immune response. The receptor for IL-2 consists of three subunits (55 kDa IL2Rα, 75 kDa IL2Rβ, 64 kDa common gamma chain γc/IL2Rγ) that are present on the cell surface in varying preformed complexes. Mature human IL-2 shares 56 % and 66 % amino acid sequence identity with mouse and rat IL-2, respectively. Human and mouse IL-2 exhibit cross-species activity.
Reference
1. Ma, A., R. Koka, and P. Burkett. 2006. Annu Rev Immunol, 24: 657-79
2. Taniguchi, T., H. Matsui, T. Fujita, et al. 1983. Nature, 302: 305-10
3. Liparoto, S.F., D.G. Myszka, Z. Wu, et al. 2002. Biochemistry, 41: 2543-51
4. Bodnar, A., E. Nizsaloczki, G. Mocsar, et al. 2008. Immunol Lett, 116: 117-25
5. Mosmann, T.R., T. Yokota, R. Kastelein, et al. 1987. J Immunol, 138: 1813-6.
| Gene ID | 3558 |
| Accession # | P60568 |
| Alternate Names | IL2, T-cell Growth Factor, TCGF, Aldesleukin |
| Source | Escherichia coli. |
| M.Wt | Approximately 15.4 kDa, a single non-glycosylated polypeptide chain containing 133 amino acids. |
| AA Sequence | APTSSSTKKT QLQLEHLLLD LQMILNGINN YKNPKLTRML TFKFYMPKKA TELKHLQCLE EELKPLEEVL NLAQSKNFHL RPRDLISNIN VIVLELKGSE TTFMCEYADE TATIVEFLNR WITFCQSIIS TLT |
| Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. |
| Stability & Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles. - A minimum of 12 months when stored at ≤ -20 °C as supplied. Refer to lot specific COA for the Use by Date. - 1 month, 2 to 8 °C under sterile conditions after reconstitution. - 3 months, -20 to -70 °C under sterile conditions after reconstitution. |
| Formulation | Lyophilized from a 0.2 μm filtered concentrated solution in 20 mM PB, pH 3.5. |
| Reconstitution | We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled HO to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions. Do not reconstitute in cell culture media directly. |
| Biological Activity | Fully biologically active when compared to standard. Measured in a cell proliferation assay using CTLL-2 cells. The specific activity of recombinant human IL-2 is > 1.0 × 107 IU/mg, which is calibrated against rHuIL-2 WHO International Standard (NIBSC code: 86/500). |
| Shipping Condition | Gel pack. |
| Handling | Centrifuge the vial prior to opening. |
| Usage | For Research Use Only! Not to be used in humans. |
Quality Control & DataSheet
- View current batch:
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Purity > 98 % by SDS-PAGE and HPLC analyses.
- Datasheet
Endotoxin: Less than 0.01 EU/μg of rHuIL-2 GMP as determined by LAL method.