Recombinant Rat TNF-alpha/TNFA Protein
SKU: PKSR030457-50
Recombinant Rat TNF-alpha/TNFA Protein
| SKU # | PKSR030457 |
| Expression Host | E.coli |
Description
| Synonyms | Cachectin, Membrane Form, Soluble Form, TNF-Alpha, TNF-a, Tnf, Tnfa, Tnfsf2, Tumor Necrosis Factor, Tumor Necrosis Factor Ligand Superfamily Member 2 |
| Species | Rat |
| Expression Host | E.coli |
| Sequence | Leu80-Leu235 |
| Accession | P16599 |
| Calculated Molecular Weight | 17.4 kDa |
| Observed Molecular Weight | 14 kDa |
| Tag | None |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 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 a 0.2 μm filtered solution of PBS, pH 7.4. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 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 (TNF-alpha, TNFSF2) is the prototypic ligand of the TNF superfamily. Rat TNF-alpha consisits of a 35 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 179 aa extracellular domain (ECD). Within the ECD, rat TNF-alpha shares 94% aa sequence identity with mouse. TNF-alpha is produced by a wide variety of immune, epithelial, endothelial, and tumor cells. TNF exists as a homotrimer and interacts with SPPL2B. TNF is mainly secreted by macrophages and can induce cell death of certain tumor cell lines. TNF is a key cytokine in the development of several inflammatory disorders. It contributes to the development of type 2 diabetes throught its effects on insulin resistance and fatty acid metabolism.