Name : Human Fas Ligand/TNFSF6 Protein
Product Source :
Recombinant Human Fas Ligand/TNFSF6 Protein is expressed from HEK293 with His tag at the N-Terminus. It contains Pro134-Leu281.[Accession | AAH17502.1]
Molecular Weight :
The protein has a predicted MW of 18 kDa. Due to glycosylation, the protein migrates to 20-35 kDa based on Tris-Bis PAGE result.
Endotoxin Level :
Less than 1EU per μg by the LAL method.
Purity :
> 95% as determined by Tris-Bis PAGE
Formulation :
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3-6 months after reconstitution. 2-8°C for 2-7 days after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Product Concentration :
Tris-Bis PAGE Human Fas Ligand on Tris-Bis PAGE under reduced condition. The purity is greater than 95%. ELISA Data Immobilized Human Fas Ligand, His Tag at 2μg/ml (100μl/Well) on the plate. Dose response curve for Human Fas, hFc Tag with the EC50 of 0.19μg/ml determined by ELISA (QC Test). SPR Data Human Fas, His Tag immobilized on CM5 Chip can bind Human Fas Ligand, His Tag with an affinity constant of 19.45 nM as determined in SPR assay (Biacore T200).
Background :
Fas ligand (FasL, CD95L) is a 40-kDa type II transmembrane protein that binds to Fas (CD95) receptors and promotes programmed cell death. Fas receptors are expressed at higher levels in many tumors than in normal cells.Somewhat paradoxically, elimination of Fas or FasL from tumors also leads to death induced by CD95 receptor/ligand elimination (DICE).
Synonyms :
APTL; CD95-L; Fas ligand; APT1LG1; TNFSF6; FASLG; ALPS1B; CD178; FASL; TNLG1A
References & Citations :
(1)Rieux-Laucat F, Magérus-Chatinet A, Neven B. The Autoimmune Lymphoproliferative Syndrome with Defective FAS or FAS-Ligand Functions. J Clin Immunol. 2018 Jul;38(5):558-568. doi: 10.1007/s10875-018-0523-x. Epub 2018 Jun 17. PMID: 29911256.
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