|Purity||>98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hHis6FasL. All lots are greater than 98% pure.|
|Endotoxin||Less than 0.01 ng endotoxin/1 μg hHis6FasL.|
|Activity||The bioactivity of hHis6FasL was determined in a Jurkat cell viability assay. The ED50 of each lot is between 1-5 ng/ml.|
|Molecular Formula||Recombinant N-terminally His6-tagged hFasL has a calculated MW of 19,834. DTT-reduced and non-reduced protein migrate as 31-36 kDa polypeptides. Lower mobility in SDS-PAGE is due to glycosylation.|
Recombinant humanHis6 FasL (hHis6FasL) Pro134-Leu281 (Accession #NP_000630) was expressed in human 293 cells at Cell Signaling Technology.
FasL is a member of the TNF-superfamily family of proteins and is expressed primarily on the cell surface of activated T and NK cells (1). FasL regulates the immune response through its ability to induce apoptosis. The immunoregulatory role of FasL is underscored by lymphoadenopathy associated with FasL or Fas knockout mice and the fraction of autoimmune lympho-proliferative syndrome (ALPS) patients that have mutations in the FasL receptor, Fas (1). FasL is a membrane protein that can be cleaved into a soluble trimeric form by metalloproteinases (1,2). The soluble form of FasL retains the ability to bind to Fas, however, its ability to induce apoptosis is diminished (2). The ligation of Fas by FasL leads to the assembly of death-inducing signaling complex (DISC) and the recruitment and activation of caspase-8/caspase-10 (1,3). Active caspase-8/caspase-10 subsequently activates the “effector” caspases caspase-3 and caspase-7, and cleavage of BID (1,3).
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UniProt ID: P48023
Entrez-Gene Id: 356
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|5452SC||10 µg (With Carrier)||