ED50 is less than 0.03 ng/mL as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D. Specific Activity of 3.0 x 10 7 IU/mg.
纯度
> 95 % as determined by reducing SDS-PAGE.
过滤
0.2 μm filtered
内毒素水平
Less than 0.1 ng/μg (1 IEU/μg) as determined by LAL test
custom-made
TNF alpha
宿主: 小鼠
宿主: HEK-293 Cells
Recombinant
> 90 % as determined by Bis-Tris PAGE, anti-tag ELISA, Western Blot and analytical SEC (HPLC)
custom-made
TNF alpha
宿主: 人
宿主: HEK-293 Cells
Recombinant
> 90 % as determined by Bis-Tris PAGE, anti-tag ELISA, Western Blot and analytical SEC (HPLC)
TNF alpha
宿主: 小鼠
宿主: 大肠杆菌(E. Coli)
Recombinant
> 95 % as determined by SDS-PAGE
Active
限制
仅限研究用
状态
Lyophilized
溶解方式
It is not recommended to reconstitute to a concentration less than 100 μg/mL. Dissolve the lyophilized protein in ddH2O. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
缓冲液
Lyophilized from a 0.2 μm filtered solution of 20 mM PB, 150 mM NaCl, pH 7.0.
注意事项
Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
储存条件
4 °C/-20 °C/-80 °C
储存方法
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Recombinant Tumor Necrosis Factor α/TNF-α is a non-glycosylated cytokine produced from E. coli using rDNA technology. The protein consists of three identical polypeptide chains of 158 AA combined to form a compact bell-shaped homotrimer. The individual subunits have a relative molecular mass of 17,484 Daltons each. TNF-α is a potent lymphoid factor that exerts cytotoxic effects on a wide range of tumor cells and certain other target cells. TNFα is a homotrimer with a subunit molecular mass of 17 kDa and plays a major role in growth regulation, differentiation, inflammation, viral replication, tumorigenesis, autoimmune diseases and in viral, bacterial, fungal, and parasitic infections. Besides inducing hemorrhagic necrosis of tumors, TNF was found to be involved in tumorigenesis, tumor metastasis, viral replication, septic shock, fever, inflammation, and autoimmune diseases including Crohn's disease, and rheumatoid arthritis as well as graft-versus-host disease.