Recombinant Human TNF beta/TNFB Protein

SKU: PKSH033166

Size: 100μg

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.

Exp date: 12 months

Category ID_II: Recombinant Proteins

Category ID_III: Cytokines

Abbreviation: TNF beta;TNFB

Target Synonym: LT-Alpha;LTA;Lymphotoxin-Alpha;TNF-Beta;TNFB;TNFSF1;Tumor Necrosis Factor Ligand Superfamily Member 1

Research Areas: Signal Transduction;Cancer;immunology;

Conjugation:

Target Species: Human

Expression Host: E.coli

Application: Cell culture

Fusion tag: N-His

UNIProt ID: P01374

Accession: P01374

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.

Concentration:

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.

Sequence: Leu35-Leu205

Purity: > 98 % as determined by reducing SDS-PAGE.

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.

Endotoxin: < 0.1 EU per μg of the protein as determined by the LAL method.

Calculated MW: 18.7 kDa

ObservedMW: 21 kDa