TNF Protein (Native, Human)
Product Specifications
Abbreviation
TNF
Synonyms
DIF, TNF-alpha, TNFA, TNFSF2, TNLG1F
Host
E. coli
Tag
Native
Endotoxin
< 5 EU per mg of the protein.
Purity
≥ 95 % as determined by SDS-PAGE. ≥ 95 % as determined by SEC-HPLC.
Bioactivity
Measured in a cytotoxicity assay using L929 mouse fibrosarcoma cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is typically 3-30 pg/mL. The specific activity of recombinant human TNF-alpha is >36,000IU/μg, which is calibrated against the human TNF-alpha WHO International Standard (NIBSC code: 12/154) .
Function
Val77-Leu233
Molecular Weight
The recombinant human TNF-α consists of 158 amino acids and has a predicted molecular mass of 17.5 kDa.
Species
Human
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