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產品詳情
  • 產品名稱:重組人腫瘤壞死因子-α/ TNFSF2蛋白

  • 產品型號:rHuTNF-α/TNFSF2
  • 產品廠商:KALANG
  • 產品文檔:
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簡單介紹:
重組人腫瘤壞死因子-α/ TNFSF2蛋白與其它公司提供的重組蛋白不同,rHuTNF-α/TNFSF2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.重組人腫瘤壞死因子-α/ TNFSF2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:

重組人腫瘤壞死因子-α/ TNFSF2蛋白

Synonyms Tumor Necrosis Factor, TNFSF2, Cachectin, Differentiation-inducing factor , DIF, Necrosin, Cytotoxin
Species Human
Accession P01375
GeneID 7124
Source 重組人腫瘤壞死因子-α/ TNFSF2蛋白Escherichia coli.
Molecular Weight Approximately 17.5 kDa, a single non-glycosylated polypeptide chain containing 158 amino acids.
Quantity 10μg/50μg/1000μg
AA Sequence MVRSSSRTPS DKPVAHVVAN PQAEGQLQWL NRRANALLAN GVELRDNQLV VPSEGLYLIY SQVLFKGQGC PSTHVLLTHT ISRIAVSYQT KVNLLSAIKS PCQRETPEGA EAKPWYEPIY LGGVFQLEKG DRLSAEINRP DYLDFAESGQ VYFGIIAL
Purity > 98 % by SDS-PAGE and HPLC analyses.
Biological Activity 重組人腫瘤壞死因子-α/ TNFSF2蛋白Fully biologically active when compared to standard. The ED50 as determined by a cytotoxicity assay using murine L929 cells is less than 0.05 ng/ml, corresponding to a specific activity of > 2.0 × 107 IU/mg in the presence of actinomycin D.
Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation Lyophilized from a 0.2 μm filtered concentrated solution in 20 mM PB, 10 mM Nacl, pH 7.0.
Endotoxin Less than 1.0 EU/μg of rHuTNF-α/TNFSF2 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.
重組人腫瘤壞死因子-α/ TNFSF2蛋白
SDS-PAGE
Reference 1. Davenport C, Kenny H, Ashley DT, et al. 2012. Eur J Clin Invest, 42: 1173-9.
2. Cavalcanti YV, Brelaz MC, Neves JK, et al. 2012. Pulm Med, 2012: 745483.
3. Sheng WS, Hu S, Ni HT, et al. 2005. J Leukoc Biol, 78: 1233-41.
4. Berthold-Losleben MandHimmerich H. 2008. Curr Neuropharmacol, 6: 193-202.
Background 重組人腫瘤壞死因子-α/ TNFSF2蛋白Tumor necrosis factor alpha (TNF-α), also called cachectin, is the best-know member of the TNF-family, which can cause cell death. This protein is produced by neutrophils, activated lymphocytes, macrophages, NK cells, LAK cells, astrocytes endothelial cells, smooth muscle cells and some transformed cells. TNF-α occurs as a secreted, soluble form and as a membrane-anchored form, both of which are biologically active. The naturally-occurring form of TNF-α is glycosylated, but non-glycosylated recombinant TNF-α has comparable biological activity. The biologically active native form of TNF-α is reportedly a trimer. Human and murine TNF-α show approximately 79 % homology at the amino acid level and cross-reactivity between the two species. Two types of receptors for TNF-α have been described and virtually all cell types studied show the presence of one or both of these receptor types.

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