Human CellExp Fas Ligand/FasL, human recombinant protein
FASLG, ALPS1B, APT1LG1, CD178, CD95-L, CD95L, FASL, TNFSF6, Fas ligand
|Calculated MW||This protein is fused with 6×His tag at N-terminus, has a calculated MW of 17.7 kDa. The predicted N-terminus is His. Protein migrates as 25-32 kDa in reduced SDS-PAGE due to glycosylation.|
|Other Names||FASLG, ALPS1B, APT1LG1, CD178, CD95-L, CD95L, FASL, TNFSF6, Fas ligand|
|Results||Measured by its ability to induce apoptosis of Jurkat human acute T cell leukemia cells. The ED50 for this effect is typically 0.1-1.5 ng/mL in the presence of 10 µg/mL of a crosslinking antibody Mouse Anti poly-Histidine Monoclonal Antibody.|
|Application Notes||Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 µg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.|
|Storage||-20°C; Lyophilized from 0.22 µm filtered solution in 50 mM tris, 100 mM glycine, pH 7.0. Normally Mannitol or Trehalose is added as protectants before lyophilization.|
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Fas ligand also known as FasL, CD178, CD95L, or TNFSF6, is a homotrimeric type-II transmembrane protein that belongs to the tumor necrosis factor (TNF) family. Its binding with its receptor induces apoptosis. Fas ligand/receptor interactions play an important role in the regulation of the immune system and the progression of cancer. Mature human Fas Ligand consists of a 179 amino acid (aa) extracellular domain (ECD), a 22 aa transmembrane segment, and a 80 aa cytoplasmic domain. Within the ECD, human Fas Ligand shares 81% and 78% aa sequence identity with mouse and rat Fas Ligand, respectively. Apoptosis triggered by Fas-Fas ligand binding plays a fundamental role in the regulation of the immune system. Its functions include T-cell homeostasis, cytotoxic T-cell activity, immune privilege, maternal tolerance, tumor counterattack. Defective Fas-mediated apoptosis may lead to oncogenesis as well as drug resistance in existing tumors. Germline mutation of Fas is associated with autoimmune lympho proliferative syndrome (ALPS), a childhood disorder of apoptosis.
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Takahashi T.,et al.Int. Immunol. 6:1567-1574(1994).
Schaetzlein C.E.,et al.Submitted (JUN-1995) to the EMBL/GenBank/DDBJ databases.
Mita E.,et al.Biochem. Biophys. Res. Commun. 204:468-474(1994).
Zeytun A.,et al.Submitted (JUL-2000) to the EMBL/GenBank/DDBJ databases.
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