Recombinant Human TNF-alpha/TNFA Protein

SKU: PKSH033490

Size: 50μg

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-alpha;TNFA

Target Synonym: Cachectin;TNF;TNF-Alpha;TNF-a;TNFA;TNFSF2;Tumor Necrosis Factor;Tumor Necrosis Factor Ligand Superfamily Member 2

Research Areas: Signal Transduction;Cardiovascular;Cancer;immunology;metabolism;

Conjugation:

Target Species: Human

Expression Host: E.coli

Application: Cell culture

Fusion tag: None

UNIProt ID: P01375

Accession: P01375

Background: TNFα is a homotrimer with a subunit molecular mass of 17 kD cytokine that binds to TNFRSF1A/TNFR1 and TNFRSF1B/TNFBR. It is mainly secreted by macrophages and can induce cell death of certain tumor cell lines. It plays a major role in growth regulation; differentiation; inflammation; viral replication; tumorigenesis; autoimmune diseases and in viral; bacterial; fungal; and parasitic infections. Besides inducing hemorrhagic necrosis of tumors; TNF was found to be involved in tumorigenesis; tumor metastasis; viral replication; septic shock; fever; inflammation; and autoimmune diseases including Crohn’s disease; and rheumatoid arthritis as well as graft-versus-host disease.

Concentration:

Activity: Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is 10-50 pg/ml.

Sequence: Val77-Leu233

Purity: > 95 % as determined by reducing SDS-PAGE.

Formulation: Lyophilized from a 0.2 μm filtered solution of 20mM PB, 6% Sucrose, 4% Mannitol, 0.05% Tween 80, pH 6.0.
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: < 0.01 EU per μg of the protein as determined by the LAL method.

Calculated MW: 17.5 kDa

ObservedMW: 16 kDa