英文全名
Recombinant Human Tumor Necrosis Factor-alpha/TNFSF2 (rHuTNF-alpha/TNFSF2)
英文别名
Tumor Necrosis Factor, TNFSF2, Cachectin, Differentiation-inducing factor , DIF, Necrosin, Cytotoxin
蛋白结构
氨基酸序列
MVRSSSRTPS DKPVAHVVAN PQAEGQLQWL NRRANALLAN GVELRDNQLV VPSEGLYLIY SQVLFKGQGC PSTHVLLTHT ISRIAVSYQT KVNLLSAIKS PCQRETPEGA EAKPWYEPIY LGGVFQLEKG DRLSAEINRP DYLDFAESGQ VYFGIIAL
Accession
Gene ID
产品英文概述
Tumor necrosis factor alpha (TNF-alpha), 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-alpha occurs as a secreted, soluble form and as a membrane-anchored form, both of which are biologically active. The naturally-occurring form of TNF-alpha is glycosylated, but non-glycosylated recombinant TNF-alpha has comparable biological activity. The biologically active native form of TNF-alpha is reportedly a trimer. Human and murine TNF-alpha show approximately 79 % homology at the amino acid level and cross-reactivity between the two species. Two types of receptors for TNF-alpha have been described and virtually all cell types studied show the presence of one or both of these receptor types.
来源
Escherichia coli.
分子量
Approximately 17.5 kDa, a single non-glycosylated polypeptide chain containing 158 amino acids.
生物活性
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.
外观
Sterile filtered white lyophilized (freeze-dried) powder.
配方
Lyophilized from a 0.2 um filtered concentrated solution in 20 mM PB, 10 mM Nacl, pH 7.0.
内毒素
Less than 1.0 EU/ug of rHuTNF-α/TNFSF2 as determined by LAL method.
溶解说明
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.
储存条件
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.- 12 months from date of receipt, -20 to -70 °C as supplied.- 1 month, 2 to 8 °C under sterile conditions after reconstitution.- 3 months, -20 to -70 °C under sterile conditions after reconstitution.
参考资料
纯度
> 98 % by SDS-PAGE and HPLC analyses.
SDS-PAGE电泳
包装规格
10ug/100ug/500ug
安全数据表下载 (SDS)
技术参数表下载 (TDS)
品牌链接
Recombinant Human Tumor Necrosis Factor-alpha/TNFSF2是ChemWhat品牌授权产品并通过沃尔森销售，下面是ChemWhat上的该产品链接 Recombinant Human Tumor Necrosis Factor-alpha/TNFSF2 (rHuTNF-alpha/TNFSF2)
