Recombinant Human TNF beta/TNFB Protein (Active)
SKU: PKSH033166-100
Recombinant Human TNF beta/TNFB Protein (Active)
| SKU # | PKSH033166 |
| Expression Host | E.coli |
Description
| Synonyms | LT-Alpha, LTA, Lymphotoxin-Alpha, TNF-Beta, TNFB, TNFSF1, Tumor Necrosis Factor Ligand Superfamily Member 1 |
| Species | Human |
| Expression Host | E.coli |
| Sequence | Leu35-Leu205 |
| Accession | P01374 |
| Calculated Molecular Weight | 18.7 kDa |
| Observed Molecular Weight | 21 kDa |
| Tag | N-His |
| Bio-activity | Measure by its ability to induce cytotoxicity in L929 cells in the presence of actinomycin D. The ED50 for this effect is <3 pg/mL. The specific activity of recombinant human TNF beta is > 3.3x 108 IU/mg. |
Properties
| Purity | > 98 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 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 20 mM sodium citrate, 0.2 M NaCl, pH 3.5. 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 β (TNF-β) is a secreted protein belonging to the tumor necrosis factor family. TNF-β binds to TNFRSF1A/TNFR1, TNFRSF1B/TNFBR and TNFRSF14/HVEM in homotrimeric form, binds to TNFRSF3/LTBR in heterotrimeric form with LTB. TNF-β forms heterotrimers with lymphotoxin-beta, which anchors TNF-β to the cell surface. TNF-β mediates the inflammatory, immunostimulatory, and antiviral response, involves in the formation of second lymphoid organs during development, has a role in apoptosis. TNF-β is produced by lymphocytes and cytotoxic for a variety of tumor cells in vitro and in vivo.