Mouse Tumor Necrosis Factor-alpha Recombinant

Catalog #
90246-A
$130 *
Size: 5 µg
Qty
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Description

Recombinant Mouse TNF is a disulfide-linked monomer protein, consisting of 157 amino acids and migrates as an approximately 17 kDa protein under reducing conditions. Optimized DNA sequence encoding Mouse Tumor Necrosis Factor-alpha extracellular domain was expressed in E. coli.

Synonyms
TNF-alpha, TNFa, Tumor Necrosis Factor-alpha
Product Info
Storage and Usage
Citations
Species
Mouse
Host Species/Expression System
E. coli
Purity
≥97% by SDS-PAGE and HPLC
Format
lyophilized protein
Formulation
Lyophilized from a 0.2 µm filtered PBS solution, pH 7.0.
MW
17 kDa
Endotoxin Level
<0.1 ng/µg (1 EU/µg), using the LAL gel clot method.
Biological Activity
The ED50 was determined cytolysis of murine L929 cells in the presence of Actinomycin D is ≤ 0.05 ng/ml, corresponding to a specific activity of ≥ 3 x 107 units/mg.
Genbank #
P06804
UniProt #
P06804
Background
Tumor Necrosis Factor is secreted by macrophages, monocytes, neutrophils, T-cells, and NK- cells following their stimulation by bacterial lipopolysaccharides. Cells expressing CD4 secrete TNF-alpha while CD8(+) cells secrete little or no TNF-alpha. Stimulated peripheral neutrophilic granulocytes but also unstimulated cells and also a number of transformed cell lines, astrocytes, microglial cells, smooth muscle cells, and fibroblasts also secrete TNF. Human milk also contains this factor. The synthesis of TNF-alpha is induced by many different stimuli including interferons, IL-2, GM-CSF, SP, Bradykinin, Immune complexes, inhibitors of cyclooxygenase and PAF (platelet activating factor). Human TNF-alpha is a non-glycosylated protein of 17 kDa and a length of 157 amino acids. Murine TNF-alpha is N-glycosylated. Homology with TNF-beta is approximately 30%. TNF-alpha forms dimers and trimers.
References
1. Vermel' AE. Klin Med (Mosk). 2005,83(11):13-7.
2. Tracey KJ, Cerami A. Annu Rev Med. 1994,45:491-503
3. Sedgwick JD, et al. Immunol Today. 2000 Mar,21(3):110-3.