| Description : |
Cytokine that binds to TNFRSF1A/TNFR1 and TNFRSF1B/TNFBR. It is mainly secreted by macrophages and can induce cell death of certain tumor cell lines. It is potent pyrogen causing fever by direct action or by stimulation of interleukin-1 secretion and is implicated in the induction of cachexia, Under certain conditions it can stimulate cell proliferation and induce cell differentiation (By similarity). Induces insulin resistance in adipocytes via inhibition of insulin-induced IRS1 tyrosine phosphorylation and insulin-induced glucose uptake. Induces GKAP42 protein degradation in adipocytes which is partially responsible for TNF-induced insulin resistance (By similarity). |
| Source : |
E.coli |
| Species : |
Canine |
| Form : |
Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4. |
| Bio-activity : |
Fully biologically active when compared to standard. The ED50 as determined by a cytotoxicity assay using murine L929 cells is less than 1.0 ng/ml, corresponding to a specific activity of > 1.0 × 10⁶ IU/mg in the presence of actinomycin D. |
| Molecular Mass : |
Approximately 17.3 kDa, a single non-glycosylated polypeptide chain containing 157 amino acids. |
| Protein length : |
157 |
| AA Sequence : |
VKSSSRTPSDKPVAHVVANPEAEGQ LQWLSRRANALLANGVELTDNQLIV PSDGLYLIYSQVLFKGQGCPSTHVL LTHTISRFAVSYQTKVNLLSAIKSP CQRETPEGTEAKPWYEPIYLGGVFQ LEKGDRLSAEINLPNYLDFAESGQV YFGIIAL |
| Endotoxin : |
Less than 1 EU/μg of rCaTNF-α as determined by LAL method. |
| Purity : |
>95% by SDS-PAGE and HPLC analyses. |
| 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 conditions after reconstitution. |
| Reconstitution : |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 centigrade. Further dilutions should be made in appropriate buffered solutions. |
