Recombinant Human Tumor Necrosis Factor-alpha, His Tag

Tumor Necrosis Factor-α Human Recombinant His produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 164 amino acids fragment and having a molecular mass of 18.3kDa with an N-terminal hexahistidine tag. The TNF-alpha His is purified by standard chromatographic techniques.

Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.0.

It is recommended to reconstitute the lyophilized TNF-α in sterile 18MΩ-cm H₂O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Lyophilized TNF-α although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TNF-α should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).

Please prevent freeze-thaw cycles.

Greater than 97.0% as determined by SDS-PAGE and HPLC analyses.

MHHHHHHVRS SSRTPSDKPV AHVVANPQAE GQLQWLNRRA NALLANGVEL RDNQLVVPSE GLYLIYSQVL FKGQGCPSTH VLLTHTISRI AVSYQTKVNL LSAIKSPCQR ETPEGAEAKP WYEPIYLGGV FQLEKGDRLS AEINRPDYLD FAESGQVYFG IIAL.

SDS

The ED50 was determined in the presence of actinomycin D by a cytotoxicity assay using murine L929 cells is <0.05 ng/ml, corresponding to a specific activity of > 2.0 × 107IU/mg.