ED50 < 30 pg/mL, measured in a cytotoxicity assay using L-929 mouse fibrosarcoma cells in the presence of the metabolic inhibitor actinomycin D, corresponding to a specific activity of > 3.3 x 10^7 units/mg.
TNF alpha
宿主: 犬
宿主: 大肠杆菌(E. Coli)
Recombinant
Greater than 95 % by SDS-PAGE gel analyses
WB, ELISA
限制
仅限研究用
状态
Lyophilized
溶解方式
Reconstituted in ddH2O or PBS at 100 μg/mL.
缓冲液
Lyophilized after extensive dialysis against PBS.
储存条件
-80 °C
储存方法
Lyophilized recombinant Human Tumor Necrosis Factor-alpha (TNF-a), remains stable up to 6 months at -80 °C from date of receipt. Upon reconstitution, human TNF-alpha should be stable up to 1 week at 4 °C or up to 3 months at -20 °C.
Tumor Necrosis Factor-alpha (TNF-a) is a homotrimer with a subunit molecular mass of 17.3 kDa. Tumor Necrosis Factor-alpha(TNF-a) plays a major role in growth regulation, differentiation, inflammation, viral replication, tumorigenesis, and autoimmune diseases, and in viral, bacterial, fungal, and parasitic infections. Besides inducing hemorrhagic necrosis of tumors, TNF has been 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.Recombinant Human Tumor Necrosis Factor-alpha (TNF-a) produced in E.coli is a single non-glycosylated polypeptide chain containing 157 amino acids. A fully biologically active molecule, rhTNF-a has a molecular mass of 17.3 kDa analyzed by reducing SDS-PAGE. Synonyms: TNF-alpha, Tumor necrosis factor ligand superfamily member 2, TNF-a, Cachectin, DIF, TNFA, TNFSF2