Recombinant Human TNFa/TNF-alpha Protein, C-Strep (HF879031) expressed in Mammalian Cells, spanning Val77-Leu233.
Highlights
●Mammalian Expression — Proper folding and native glycosylation.
●High Purity — >90% purity verified by SDS-PAGE.
Expression system
Mammalian Cells
Accession
P01375
Protein length
Val77-Leu233
Applications
ELISA, Immunogen, SDS-PAGE, WB, Bioactivity testing in progress
Nature
Recombinant
Target
TNFa
Endotoxin level
Please contact with the lab for this information.
Purity
>95% as determined by SDS-PAGE.
Predicted molecular weight
20.47 kDa
Form
Lyophilized
Storage buffer
Lyophilized from a solution in PBS pH 7.4, 1 mM EDTA, 4%trehalose, 1% mannitol.
Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
Reconstitution
Reconstitute in sterile water for a stock solution. Adjust the volume of sterile water so that, after reconstitution, the final stock concentration matches the value indicated on the product label or datasheet.
RECONSTITUTION PROTOCOL
1. Allow the product to be reconstituted and the reconstitution diluent to reach room temperature.
2. Tap or briefly centrifuge the product vial before opening to dislodge any lyophilized material that may be dispersed on the wall or cap of the vial.
3. Use the diluent and stock concentration recommended in the product datasheet. If preparing a stock concentration higher than recommended, contact Technical Service.
4. After adding the diluent, re-cap the vial and invert gently by hand or place on a slow rocking platform to allow the reconstitution diluent to coat all the surfaces inside the vial. Note: Do not mix by vortexing or by pipetting the material up and down.
5. Allow the vial to sit at room temperature with gentle agitation for at least 15 minutes before aliquotting or using.
6. Store the reconstituted material in single use aliquots in polypropylene or siliconized tubes. Aliquots of 10 μL or larger are recommended.
Shipping
In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
Stability and Storage
Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for one week. Store at -20 to -80°C for twelve months from the date of receipt.
Tumor necrosis factor (TNFa) is a ~25 kDa protein. 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. Impairs regulatory T-cells (Treg) function in individuals with rheumatoid arthritis via FOXP3 dephosphorylation. Up-regulates the expression of protein phosphatase 1 (PP1), which dephosphorylates the key 'Ser-418' residue of FOXP3, thereby inactivating FOXP3 and rendering Treg cells functionally defective.
1. Nie, H. et al. (2013) Nature medicine 19, 322-8. PMID: 23396208
2. Friedmann, E. et al. (2006) Nature cell biology 8, 843-8. PMID: 16829952
3. Jinesh G, G. et al. (2012) Journal of leukocyte biology 92, 233-44. PMID: 22517918
4. Nakahara, H. et al. (2003) Arthritis and rheumatism 48, 1521-9. PMID: 12794819
Note
For research use only.
Images
SDS-PAGE
SDS-PAGE for Recombinant Human TNFa/TNF-alpha Protein, C-Strep
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