Specifications
- SPECIES: Human
- SOURCE SPECIES: HEK293 cells
- RECOMBINANT PROTEIN SEQUENCE: Ala 21 - Thr 153
- FUSION TAG: His Tag
- TESTED APPLICATIONS: ELISA, WB
- APPLICATION NOTE: This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 17.3 kDa. The protein migrates as 18 kDa and 19 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
- PREDICTED MOLECULAR WEIGHT: 17.3 kDa
Properties
- PURITY: >90% as determined by SDS-PAGE.
- PHYSICAL STATE: Lyophilized
- BUFFER: PBS, pH7.4
- STORAGE CONDITIONS: Lyophilized Protein should be stored at -20°C or lower for long term storage. Upon reconstitution, working aliquots should be stored at -20°C or -70°C. Avoid repeated freeze-thaw cycles.
Additional Info
- NCBI OFFICIAL SYMBOL: IL2
- ADDITIONAL NAMES: IL2,TCGF,lymphokine,Interleukin 2
- Protein Accession Number: NP_000577.2
- NCBI GENE ID NUMBER: 3558
Background
- Interleukin-2 (IL-2) is an interleukin, a type of cytokine immune system signaling molecule, which is a leukocytotrophic hormone that is instrumental in the body's natural response to microbial infection and in discriminating between foreign (non-self) and self. IL-2 mediates its effects by binding to IL-2 receptors, which are expressed by lymphocytes, the cells that are responsible for immunity. Mature human IL-2 shares 56% and 66% aa sequence identity with mouse and rat IL-2, respectively. Human and mouse IL-2 exhibit crossspecies activity. The receptor for IL-2 consists of three subunits that are present on the cell surface in varying preformed complexes. IL-2 is also necessary during T cell development in the thymus for the maturation of a unique subset of T cells that are termed regulatory T cells (T-regs). After exiting from the thymus, T-Regs function to prevent other T cells from recognizing and reacting against "self antigens", which could result in "autoimmunity". T-Regs do so by preventing the responding cells from producing IL-2. Thus, IL-2 is required to discriminate between self and non-self, another one of the unique characteristics of the immune system.
- 1: Gaffen, S.L. and K.D. Liu, 2004, Cytokine 28:109.
- 2: Kasakura S, Lowenstein L, 1965, Nature 208 (5012): 794-795.
- 3: Smith KA, Favata MF, Oroszlan S, 1983, J. Immunol. 131 (4): 1808.
- 4: Thornton AM, Shevach EM, 1998, J. Exp. Med. 188 (2): 287-96.
Disclaimer
- FOR RESEARCH USE ONLY
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