Mouse FAS-L ELISA Kit

Kit Components

 1. Recombinant Mouse FAS-L standard: 2 vials

 2. One 96-well plate coated with Mouse FAS-L  Ab

 3. Sample diluent buffer: 12 mL - 1

 4. Detection antibody: 130 µL, dilution 1:100

 5. Streptavidin-HRP: 130 µL, dilution 1:100

 6. Antibody diluent buffer: 12 mL x1   

 7. Streptavidin-HRP diluent buffer: 12 mL x1

 8. TMB developing agent: 10 mL x1

9. Stop solution: 10 mL x1

10. Washing solution (20x): 25 mL x1

Background

Fas ligand (FasL), also known as TNFSF6, CD178, or CD95L, is a type-II transmembrane protein that belongs to the tumor necrosis factor (TNF) family. The full-length human FasL protein is a 281 amino acid (aa) polypeptide from which four truncated forms of FasL, including membrane form of tumor necrosis factor ligand superfamily member 6, soluble form of tumor necrosis factor ligand superfamily member 6 (receptor-binding FasL ectodomain, soluble Fas ligand, sFasL), ADAM10-processed FasL form (APL) and FasL intracellular domain (FasL ICD, SPPL2A- processed FasL form (SPA)), could be generated by proteolysis. Mouse FasL is synthesized as a 279 aa protein that contains a 179 aa extracellular region, a 22 aa transmembrane segment, and a 78 aa cytoplasmic domain. In the generalized lymphoproliferative disease (gld) mice, a point mutation at residue 273 of the ECD is the cause of severe lymphoproliferation and systemic autoimmunity. Mouse soluble FasL shares 94% and 85% aa identity to rat and human FasL, respectively. Mouse and human FasL show species cross-reactivity. FasL is constitutively expressed primarily in activated T lymphocytes and immune-privileged tissues including eye, testis, and placenta. FasL binds to its receptor Fas to initiate a series of apoptotic cascades which are essential to the regulation of immune system. In addition, FasL can bind the Decoy receptor 3 (DcR3) which can prevent binding of Fas with the membrane-bound FasL and thus inactivate FasL/Fas triggered apoptosis.