Recombinant Human TNF-α Protein

重组人TNF-α蛋白 | 重组人肿瘤坏死因子α蛋白 | 重组人TNF-α蛋白

Cachectin | TNF-a | TNF-alpha | Tumor necrosis factor ligand superfamily member 2 | APC1 | APC1 protein | Cachectin | DIF | Differentiation inducing factor | Macrophage cytotoxic factor | Tnf | TNF superfamily member 2 | TNF superfamily, member 2 | TNF, m

rp156007-50μg

50μg

无载体

≥95%(SDS-PAGE)

>95% (SDS-PAGE)

Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining Description: Tumor necrosis factor alpha (TNF-alpha), also known as cachectin and TNFSF2, is the prototypic ligand of the TNF superfamily. It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism. Human TNF-alpha consists of a 35 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 177 aa extracellular domain (ECD). Within the ECD, human TNF-alpha shares 97% aa sequence identity with rhesus and 71%-92% with bovine, canine, cotton rat, equine, feline, mouse, porcine, and rat TNF-alpha. TNF-alpha is produced by a wide variety of immune, epithelial, endothelial, and tumor cells. TNF-alpha is assembled intracellularly to form a noncovalently linked homotrimer which is expressed on the cell surface. Cell surface TNF-alpha can induce the lysis of neighboring tumor cells and virus-infected cells, and it can generate its own downstream cell signaling following ligation by soluble TNFR I. Shedding of membrane-bound TNF-alpha by TACE/ADAM17 releases the bioactive cytokine, a 55 kDa soluble trimer of the TNF-alpha extracellular domain. TNF-alpha binds the ubiquitous 55-60 kDa TNF RI and the hematopoietic cell-restricted 80 kDa TNF RII, both of which are also expressed as homotrimers. Both type I and type II receptors bind TNF-alpha with comparable affinity, although only TNF RI contains a cytoplasmic death domain which triggers the activation of apoptosis. Soluble forms of both types of receptors are released and can neutralize the biological activity of TNF-alpha.

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 20-100 pg/mL.

重组表达

19.5 kDa

N-His

17.6 kDa, under reducing conditions；17.6 kDa, under non-reducing condition

E. coli Accession #: P01375 | E. coli

<1.0 EU/μg

人(Human)

78-233 aa

MGSSHHHHHHSSGLVPRGSHMRSSSRTPSDKPVAHVVANPQAEGQLQWLNRRANALLANGVELRDNQLVVPSEGLYLIYSQVLFKGQGCPSTHVLLTHTISRIAVSYQTKVNLLSAIKSPCQRETPEGAEAKPWYEPIYLGGVFQLEKGDRLSAEINRPDYLDFAESGQVYFGIIAL

No

Yes