IL-2 Superkine Recombinant Protein

• Background:

  Interleukin-2 (IL-2) is a 133 amino acid glycoprotein with one intramolecular disulfide bond and variable glycosylation. It is secreted by activated T cells and induces proliferation and maturation of activated T cells, natural killer cells and lymphokine activated killer cells. IL-2 also stimulates proliferation of antibody-producing B cells, activates neutrophils and induces mononuclear cells to secrete IFN-gamma and TNF-alpha and -beta. Moreover, studies have shown that IL-2 is required for activation-induced apoptosis, an important homeostatic mechanism in the immune system, which is involved in the maintenance of peripheral tolerance to self-antigens. IL-2 promotes T cell proliferation and particularly naive T cells. IL-2 signaling on activated T cells is effected through a quaternary high-affinity receptor complex consisting of IL-2, IL-2Ralpha (CD25), IL-2Rbeta and IL-2Rgamma. Naive T cells are relatively insensitive to IL-2 as they only express small amounts of IL-2Rbeta and IL-2Rgamma. They only acquire sensitivity after CD25 expression, which captures the cytokine and presents it to the IL-2Rbeta and IL-2Rgamma receptors. IL-2 Superkine (Fc) is an artificial variant of IL-2 containing mutations at positions L80F / R81D / L85V / I 86V / I92F. These mutations are located in the molecule's core that acts to stabilize the structure and to give it a receptor-binding conformation mimicking native IL-2 bound to CD25. These mutations effectively eliminate the functional requirement of IL-2 for CD25 expression and elicit proliferation of T cells. Compared to IL-2, the IL-2 superkine induces superior expansion of cytotoxic T cells, leading to improved antitumour responses in vivo, and elicits proportionally less toxicity by lowering the expansion of Tregulatory cells and reducing pulmonary oedema.

• NCBI Gene ID:

  3558

• Swiss Prot:

  O43405

• Accession Number:

  P60568

• Tag:

  Fc Tag

• Type:

  Recombinant Proteins

• Source:

  HEK293 cells

• Field of Research:

  Cancer, Chemokines & Cytokines, Immunology, Infectious Disease, Neuroscience, Signal Transduction, Stem Cell

• Concentration:

  0.1mg/ml after reconstitution.

• Buffer:

  Contains PBS. Reconstitute with 100 μ l sterile water.

• Shipping Conditions:

  Room Temp

• Storage Conditions:

  Stable for at least 1 year after receipt when stored at -20˚ C. Working aliquots are stable for up to 3 months when stored at -20˚ C.

• Applications Notes:

  This recombinant proteins is for research use only.

• NCBI Official Name:

  Interleukin 2

• NCBI Organism:

  Homo sapiens

• Other Product Names:

  IL-2 Superkine (human) :Fc (human) (rec.), Interleukin-2, T Cell Growth Factor, TCGF, Aldesleukin, Super-2

• Species:

  Human

• Protein ID:

  45593462

• Physical Properties:

  Lyophilized

• CAS Number:

  9000-83-3