Sandwich ELISA quantitative detection kit for Human Soluble FAS in cell culture supernates, serum and plasma (heparin, EDTA, citrate). Fas, also known as APO-1, CD95 and TNFRSF6, is a member of the nerve growth factor (NGF)/tumor necrosis factor (TNF) receptor superfamily and mediates apoptosis.1 The nucleotide sequence of the cDNAs reveales that the molecule coding for the Fas antigen determinant is a 319 amino acid polypeptide with a single transmembrane domain. The extracellular domain is rich in cysteine residue, and shows a similarity to that of human tumor necrosis factor receptors, human nerve growth factor receptor, and human B cell antigen CD40.2 The APO-1 antigen as defined by the mouse monoclonal antibody anti-APO-1 is previously found to be expressed on the cell surface of activated human T and B lymphocytes and a variety of malignant human lymphoid cell lines. The APO-1 antigen is found to be a membrane glycoprotein of 48kD.3 Fas antigen is expressed and functional on papillary thyroid cancer cells and this may have potential therapeutic significance.4 Fas can play a role as an inducer of both neurite growth in vitro and accelerates recovery after nerve injury in vivo.5 The FAS and FASL triggered apoptosis pathway plays an important role in human carcinogenesis.6 Assay Range: 31.2pg/ml-2000pg/ml Sensitivity: < 3 pg/ml Crossreactivity: There is no detectable cross-reactivity with other relevant proteins. Uniprot ID: P25445 Entrez Gene ID: 355 Kit Components: 96-well plate pre-coated with anti-sFAS, Human Lyophilized recombinant sFAS, Human standard, 10ng/tube, 2Ea USB Cat No Kit Component 143696 Avidin-Biotin-Peroxidase Complex (ABC), 130ul (1:100 dilution) 143697 Sample diluent buffer, 30ml 143698 Antibody diluent buffer, 12ml 143699 ABC diluent buffer, 12ml 143700 TMB color developing agent, 10ml 143701 TMB stop solution, 10ml Storage and Handling: Store at 4C for 6 months, at -20C for 12 months. Avoid multiple freeze-thaw cycles.