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You are here:Home » Growth Factors, Cytokines » Growth Factors-TNF » Tumor Necrosis Factor alpha, Recombinant, Rat (TNFa)

Tumor Necrosis Factor alpha, Recombinant, Rat (TNFa)

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Specifications

TNF is secreted by macrophages, monocytes, neutrophils, T-cells, NK-cells following their stimulation by bacterial LPS. Cells expressing CD4 secrete TNF-alpha while CD8 cells secrete little or no TNF-alpha. The synthesis of TNF-alpha is induced by many different stimuli including interferons, IL2, GM-CSF.
Catalog #T9160-20C
Recombinant rat TNF-alpha produced in E. coli is a single, non-glycosylated, polypeptide chain containing 157 amino acids and having a molecular mass of 17339.44D.
Biological Activity Rat TNF-alpha is fully biologically active when compared to standard. The ED50 as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D is < 0.05ng/ml, corresponding to a Specific Activity of 5x10e7 IU/mg.
AA SequenceMLRSSSQNSS DKPVVHVVAN HQAEEQLEWL SQRANALLAN GMDLKDNQLV VPADGLYLIY SQVLFKGQGC PDYVLLTHTV SRFATSYQEK VSLLSAIKSP CPKDTPEGAE LKPWYEPMYL GGVSQLEKGD LLSAEVNLPK YLDITESGQV YFGVIAL
Storage and StabilityLyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile ddH2O, aliquot and store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight17.4kD
SourceE. coli
Purity~95% Analysis by RP-HPLC; Reducing and non-reducing SDS-PAGE.
FormSupplied as a lyophilized powder. Reconstitute with sterile dH2O PBS to 0.1-1mg/ml, which can be further diluted into other aqueous solutions.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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