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Recombinant Human TNF-alpha/TNFA Protein (Active)

  • Cat.No.:PKSH033490

  • Expression host: E.coli

To Purchase PKSH033490

Size:
  • 10μg
  • 50μg
Price: $74
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Description

Synonyms Tumor Necrosis Factor; Cachectin; TNF-Alpha; Tumor Necrosis Factor Ligand Superfamily Member 2; TNF-a; TNF; TNFA; TNFSF2
Species Human
Expression_host E.coli
Sequence Val77-Leu233
Accession P01375
Application Cell Culture
Mol_Mass 17.5 kDa
AP_Mol_Mass 16 kDa
Bio_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.

Properties

Purity > 95% as determined by reducing SDS-PAGE.
Endotoxin level < 1.0 EU per μg as determined by the LAL method.
Storage Lyophilized protein should be stored at < -20℃, though stable at room temperature for 3 weeks.Reconstituted protein solution can be stored at 4-7℃ 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 20mM PB, 150mM NaCl, pH 7.0.
Reconstitution Please refer to the printed manual for detailed information.

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.

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