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.
Reinheit
> 95 % as determined by reducing SDS-PAGE.
Sterilität
0.2 μm filtered
Endotoxin-Niveau
Less than 0.1 ng/μg (1 IEU/μg) as determined by LAL test
TNF alpha
Spezies: Human
Wirt: HEK-293 Cells
Recombinant
The purity of the protein is greater than 95 % as determined by SDS-PAGE and Coomassie blue staining.
custom-made
TNF alpha
Spezies: Maus
Wirt: HEK-293 Cells
Recombinant
> 90 % as determined by Bis-Tris PAGE, anti-tag ELISA, Western Blot and analytical SEC (HPLC)
Beschränkungen
Nur für Forschungszwecke einsetzbar
Format
Lyophilized
Rekonstitution
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.
Buffer
Lyophilized from a 0.2 μm filtered solution of 20 mM PB, 150 mM NaCl, pH 7.0.
Handhabung
Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
Lagerung
4 °C/-20 °C/-80 °C
Informationen zur Lagerung
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.