IL2 Protein, Human, Recombinant (L38M, L39S, C145A)

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IL2 Protein, Human, Recombinant (L38M, L39S, C145A): 製品情報

純度
> 85 % as determined by SDS-PAGE
内毒素
Please contact us for more information.
活性
Measured in a cell proliferation assay using CTLL2 cells.
The ED50 for this effect is typically 0.35-1.4 ng/mL.
タンパク質の構築
A DNA sequence encoding human IL2 (NP_000577.2) (Ala 21-Thr153, Leu 38 Met, Leu 39 Ser, Cys 145 Ala) was expressed.
NP No.
発現ホスト
Yeast
Human
予測N末端
Ala 21
分子量
The recombinant human IL2 consists of 133 amino acids and predicts a molecular mass of 15.4 kDa. It migrates as an approximately 15 kDa band in SDS-PAGE under reducing conditions.
バッファー
Lyophilized from sterile 0.1 % TFA, 70 % CAN.
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Please refer to the specific buffer information in the hard copy of CoA.
配送
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
安定性 & 保存条件
Samples are stable for up to twelve months from date of receipt at -70℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
再構成
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

IL2 Protein, Human, Recombinant (L38M, L39S, C145A): 画像

IL2 Protein, Human, Recombinant (L38M, L39S, C145A): 別名

IL-2 Protein, Human; Interleukin-2 Protein, Human; lymphokine Protein, Human; TCGF Protein, Human

IL2 背景情報

Interleukin-2, also known as T-cell growth factor, TCGF, Aldesleukin and IL2, is a secreted protein which belongs to theIL-2 family. Interleukin-2 / IL-2 was the first interleukin molecule to be discovered. Interleukin-2 / IL-2 molecule was first purified to homogeneity by immunoaffinity chromatography by Kendall Smith and his team at Dartmouth Medical School. Interleukin-2 / IL-2 was also the first cytokine shown to mediate its effects via a specific IL-2 receptor, and it was also the first interleukin to be cloned and expressed from a complementary DNA (cDNA) library. Interleukin-2 / IL-2 was designated number 2 because Smith's data at the time indicated that IL-1, produced bymacrophages, facilitates IL-2 production by T lymphocytes (T cells).
Interleukin-2 / IL-2 is produced by T-cells in response to antigenic or mitogenic stimulation, this protein is required for T-cell proliferation and other activities crucial to regulation of the immune response. Interleukin-2 / IL-2 is normally produced by the body during an immune response. When environmental substances (molecules or microbes) gain access to the body, these substances (termed antigens) are recognized as foreign by antigen receptors that are expressed on the surface of lymphocytes. Antigen binding to the T cell receptor (TCR) stimulates the secretion of Interleukin-2 / IL-2, and the expression of IL-2 receptors IL-2R. The IL-2 / IL-2R interaction then stimulates the growth, differentiation and survival of antigen-selected cytotoxic T cells via the activation of the expression of specific genes. Interleukin-2 / IL-2 can stimulate B-cells, monocytes, lymphokine-activated killer cells, natural killer cells, and glioma cells. The World Reference Standard for Interleukin-2 / IL-2 is produced by the National Institute of Biological Standards and Control in the UK. A recombinant form of Interleukin-2 / IL-2 for clinical use is manufactured by Chiron Corporation with the brand name Proleukin. It has been approved by the Food and Drug Administration (FDA) for the treatment of cancers (malignant melanoma, renal cell cancer), and is in clinical trials for the treatment of chronic viral infections, and as a booster (adjuvant) for vaccines. The use of Interleukin-2 / IL-2 in HIV therapy has been found to be ineffective.
完全な名称
interleukin 2
参考文献
  • Smith KA, et al.,1980,  J. Exp. Med.151 (6): 1551-6. 
  • Smith KA, et al.,1980, Nature. 287 (5785): 853-5.
  • Taniguchi T, et al.,1983, Nature. 302 (5906): 305.
  • Cantrell DA, et al.,1984, Science. 224 (4655): 1312-6. 
  • Smith KA, et al.,1988, Science. 240 (4856): 1169-76.
  • Wang X. et al., 2005, Science 310:1159-63.
  • Stauber D.J. et al., 2006, Proc. Natl. Acad. Sci. USA. 103: 2788-93.
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