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  • 產品名稱:重組人白介素- 7蛋白

  • 產品型號:rHuIL-7
  • 產品廠商:KALANG
  • 產品文檔:
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簡單介紹:
重組人白介素- 7蛋白與其它公司提供的重組蛋白不同,rHuIL-7蛋白產品為采用CFS的無細胞麥胚蛋白合成系統表達出來的重組蛋白,可表達出對細胞有毒性、易被蛋白酶降解的蛋白;并獲得具有良好的可溶性,并有翻譯后修飾、從而部分具有功能的蛋白.同時獨有的全自動蛋白純化技術則簡便高效,將蛋白純化過程中對蛋白的損傷降低到*小程度.重組人白介素- 7蛋白(全長序列)產品可用于Western Blot驗證、抗體制備、蛋白檢測、ELISA等試驗中.
詳情介紹:

重組人白介素- 7蛋白

Synonyms LP-1, pre-B cell factor
Species Human
Accession P13232
GeneID 3574
Source Escherichia coli.
Molecular Weight 重組人白介素- 7蛋白Approximately 17.4 kDa, a single non-glycosylated polypeptide chain containing 152 amino acids.
Quantity 2μg/10μg/1000μg
AA Sequence DCDIEGKDGK QYESVLMVSI DQLLDSMKEI GSNCLNNEFN FFKRHICDAN KEGMFLFRAA RKLRQFLKMN STGDFDLHLL KVSEGTTILL NCTGQVKGRK PAALGEAQPT KSLEENKSLK EQKKLNDLCF LKRLLQEIKT CWNKILMGTK EH
Purity > 97 % by SDS-PAGE and HPLC analyses.
Biological Activity 重組人白介素- 7蛋白Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine 2E8 cells is less than 0.5 ng/ml, corresponding to a specific activity of > 2.0 × 106 IU/mg.
Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4.
Endotoxin Less than 1 EU/μg of rHuIL-7 as determined by LAL method.
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA 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.
Storage This lyophilized preparation is stable at 2-8 °C, but should be kept at -20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles.
重組人白介素- 7蛋白
SDS-PAGE
Reference 1. Goodwin RG, Lupton S, Schmierer A, et al. 1989. Proc Natl Acad Sci U S A. 86:302-6.
2. Sutherland GR, Baker E, Fernandez KE, et al. 1989. Hum Genet. 82:371-2.
3. Lupton SD, Gimpel S, Jerzy R, et al. 1990. J Immunol. 144:3592-601.
4. Noguchi M, Nakamura Y, Russell SM, et al. 1993. Science. 262:1877-80.
5. Fry TJ, Mackall CL. 2002. Blood. 99:3892-904.
6. Fry TJ, Mackall CL. 2002. J Hematother Stem Cell Res. 11:803-7.
Background 重組人白介素- 7蛋白Interleukin-7 (IL-7) is encoded by the IL7 gene and secreted by stromal cells in the red marrow and thymus. It binds to the IL-7 receptor, a heterodimer consisting of IL-7 receptor alpha and IL-2 receptor gamma chain. IL-7 stimulates the differentiation of hematopoietic stem cells into lymphoid progenitor cells and also stimulates proliferation of B cells, T cells and NK cells. Murine IL-7 has approximately 65 % amino acid sequence identity with human IL-7 and both proteins exhibit cross-speciesactivity. IL-7 as an immunotherapy agent has been examinedin many human clinical trials for various malignancies and during HIV infection.

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