Recombinant Human Tumor Necrosis Factor-alpha, His Tag
Referência cyt-494-50ug
Tamanho : 50ug
Marca : Prospec
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Catalogue number
CYT-494
Synonyms
Introduction
TNF causes apoptotic cell death, cellular proliferation, differentiation, inflammation, tumorigenesis and viral replication, TNF is also involved in lipid metabolism, and coagulation. TNF's primary role is in the regulation of immune cells.
Dysregulation and, in particular, overproduction of TNF have been implicated in a variety of human diseases- autoimmune diseases, insulin resistance, and cancer.
Description
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.
Source
Physical Appearance
Formulation
Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.0.
Solubility
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.
Stability
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.
Purity
Greater than 97.0% as determined by SDS-PAGE and HPLC analyses.
Amino acid sequence
MHHHHHHVRS SSRTPSDKPV AHVVANPQAE GQLQWLNRRA NALLANGVEL RDNQLVVPSE GLYLIYSQVL FKGQGCPSTH VLLTHTISRI AVSYQTKVNL LSAIKSPCQR ETPEGAEAKP WYEPIYLGGV FQLEKGDRLS AEINRPDYLD FAESGQVYFG IIAL.
Safety Data Sheet
SDSBiological Activity
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.