Description
Alternate Names: TNFSF2, Cachectin, DIF, Necrosin, Cytotoxin, Cachexin, TNF Accession Number: P01375
Description: Tumor necrosis factor alpha (TNF-α) is an inflammatory cytokine secreted by macrophages, monocytes, neutrophils, T cells, and NK-cells following stimulation by bacterial lipopolysaccharide (LPS). TNF-α signal activation occurs through two receptors, TNFR1 and TNFR2. TNFR1 is expressed on most cell types, unlike TNFR2, which is expressed mainly on immune cells. TNF-α functions to stimulate phagocytosis in macrophages, chemoattract neutrophils, increase insulin resistance, and induce fever.
Source: Genetically modified E.coli.
Predicted MW: Monomer, 17.5 kDa (158 aa)
AA Sequence: MVRSSSRTPS DKPVAHVVAN PQAEGQLQWL NRRANALLAN GVELRDNQLV VPSEGLYLIY SQVLFKGQGC PSTHVLLTHT ISRIAVSYQT KVNLLSAIKS PCQRETPEGA EAKPWYEPIY LGGVFQLEKG DRLSAEINRP DYLDFAESGQ VYFGIIAL
Formulation: Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 10 mM sodium phosphate, pH 7.5
Product Specifications*
*Lot-specific values for the following specifications are supplied with each product on its corresponding COA. The values provided here are minimum expected values to pass internal requirements.
Specification |
Method of Determination |
Acceptance Criteria |
Purity |
Reducing and Non-Reducing SDS PAGE |
≥95% |
Endotoxin |
Kinetic LAL |
≤1 EUs/µg |
Biological Activity |
Cytolysis of mouse L929 cells in the presence of Actinomycin D |
≤2 ng/mL; ≥ 5.0 x 10^5 units/mg |
Preparation and Storage
Country of Origin: USA Shipping: Room temperature Storage Prior to Reconstitution: -20°C
Product Reconstitution: Sterile water at 0.1 mg/mL
Instructions: Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution.
Expiration Date:
12 months from date of receipt when stored at -20°C to -80°C as supplied.
1 month when stored at 4°C after reconstituting as directed.
To receive more information or for a bulk quote, email quotes@shenandoah-bt.com.
Part Number: Other Terms: TNFALPHA, TNF
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