Recombinant Human TNF
Cat. No.
Z101385
Unit
50 µg
Price
$535.00
Specifications
| Description | Tumor Necrosis Factor is secreted by macrophages, monocytes, neutrophils, T cells, natural killer 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. |
| SKU | Z101385 |
| Unit quantity | 50 µg |
| Family | TNF Super-family |
| Aliases |
Tumor necrosis factor, Cachectin, TNF, Tumor necrosis factor ligand superfamily member 2, TNF-a Recombinant Human TNF-alpha (TNFA) |
| Gene Symbol | TNF |
| Gene ID | 7124 |
| Accession Number | P01375 |
| Source | CHO cells |
| Species | Human (H. sapiens) |
| Appearance | Lyophilized Powder |
| Molecular Weight | 18 kDa |
| Endotoxin Level | <1.0 EU/µg of recombinant protein as determined by the LAL method. |
| Purity | >95% as determined by SDS-PAGE |
| Formulation | TNF-a was lyophilized from a 0.2μm filtered concentrated (1.0 mg/mL) solution in PBS, pH 7.2. |
| Function | The ED(50) was determined cytolysis of murine L929 cells in the presence of Actinomycin D is ≤ 0.02 ng/mL, corresponding to a specific activity of > 5.0 x 10^7 units/mg. |
| Reconstitution | A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers. |
| Storage | The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at 2° - 8°C for one month, or at -20°C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles. |
| Usage | For research use only. Not for diagnostic or therapeutic use. |
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