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Human TNF alpha

SKU: orb3002254

Description

Recombinant Human Tumor Necrosis Factor Alpha is produced by our E.coli expression system and the target gene encoding Gly57-Leu233 is expressed with a 6His tag at the N-terminus.

Images & Validation

Key Properties

Expression SystemE.coli
Biological ActivityBLI: Loaded Human TNF alpha-His(Cat#orb3002254) on HIS1K Biosensor, can bind Human TNF RII-mFc(Cat#orb2994890) with an affinity constant of 1.83 nM as determined in BLI assay. (Regularly tested) . Cell Based Assay: Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is 30-150 pg/ml. (QC verified)
TagN-6His
Molecular WeightPredicted: 21.8 KDa. Observed: 18 KDa, reducing conditions
Expression RegionGly57-Leu233
PuritySDS-PAGE: Greater than 95% as determined by reducing SDS-PAGE.
Endotoxins< 1 EU/µg as determined by LAL test.

Storage & Handling

StorageLyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Form/AppearanceLyophilized from a 0.2 μm filtered solution of 20mM Histidine, 8 %Trehalose, 0.05%Tween80, pH 5.0.
ReconstitutionAlways centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
DisclaimerFor research use only

Alternative Names

Tumor Necrosis Factor; Cachectin; TNF-Alpha; Tumor Necrosis Factor Ligand Superfamily Member 2; TNF-a; TNF; TNFA; TNFSF2

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Human TNF alpha (orb3002254)

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10 μg
$ 200.00
50 μg
$ 530.00
500 μg
$ 1,950.00
1 mg
$ 2,770.00
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