Recombinant Human TNF Protein, Biotinylated TNF-171H

Recombinant Human TNF Protein, Biotinylated

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Cat.No. : TNF-171H Optional Service: Optional requirements on this protein
Product Overview : Recombinant Human TNF(Val77-Leu233) was expressed in E. coli, Biotinylated.
Description : Tumor necrosis factor alpha (TNF-alpha ), also known as cachectin and TNFSF1A, 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 consisits 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.
Source : E. coli
Species : Human
Predicted N Terminal : Val77
Form : Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Bio-activity : Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. Matthews, N. and M.L. Neale (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 2
Molecular Mass : Predicted Molecular Mass: 17 kDa (unlabeled);
SDS-PAGE: 17 kDa, reducing conditions.
Protein length : Val77-Leu233
Endotoxin : <0.10 EU per 1 μg of the protein by the LAL method.
Purity : >95%, by SDS-PAGE with silver staining
Notes : Structure / Form: Homotrimer. Biotinylated protein via amines
Storage : Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 centigrade as supplied.
1 month, 2 to 8 centigrade under sterile conditions after reconstitution.
3 months, -20 to -70 centigrade under sterile
Reconstitution : Reconstitute at 100 μg/mL in sterile PBS.
Gene Name : TNF tumor necrosis factor [ Homo sapiens ]
Official Symbol : TNF
Synonyms : TNF; tumor necrosis factor; TNFA, tumor necrosis factor (TNF superfamily, member 2); DIF; TNF superfamily; member 2; TNF alpha; TNFSF2; TNF-a; cachectin; APC1 protein; TNF, monocyte-derived; TNF, macrophage-derived; TNF superfamily, member 2; tumor necrosis factor alpha; tumor necrosis factor-alpha; tumor necrosis factor ligand superfamily member 2; TNFA; TNF-alpha;
Gene ID : 7124
mRNA Refseq : NM_000594
Protein Refseq : NP_000585
MIM : 191160
UniProt ID : P01375
For Research Use Only. Not intended for any clinical use. No products from Creative BioMart may be resold, modified for resale or used to manufacture commercial products without prior written approval from Creative BioMart.

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