Synonyms	TNFSF2;Cachectin;Differentiation-inducing factor (DIF);Necrosin;Cytotoxin;TNS?F1A
Species	Porcine
Expression_host	E.coli
Sequence	Leu 77-Leu 232
Accession	P23563
Mol_Mass	18.1 kDa
AP_Mol_Mass	19 kDa
Tag	C-His
Bio_Activity	Measure by its ability to induce cytotoxicity in PK15 cells in the presence of the actinomycin D.The ED₅₀ for this effect is <15 pg/mL.

Properties

Purity	> 98 % as determined by reducing SDS-PAGE.
Endotoxin level	< 0.1 EU per μg of the protein as determined by the LAL method.
Storage	Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
Shipping	This product is provided as lyophilized powder which is shipped with ice packs.
Formulation	Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual.
Reconstitution	Please refer to the printed manual for detailed information.

Background

Tumor necrosis factor alpha (TNFα) is the prototypic ligand of the TNF superfamily. TNFα forms a homotrimer and functions by activating two types of receptors TNF-R1 (TNF receptor type 1,p55R) and TNF-R2 (TNF receptor type 2,p75R). TNFα is a pleiotropic cytokine that is capable to promote inflammation, to induce apoptotic cell death, and to inhibit tumorigenesis and viral replication. TNFα is a potent lymphoid factor that exerts cytotoxic effects on a wide range of tumor cells and certain other target cells.

Citations

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