ELISA 14-3-3 protein sigma (SFN)

Reactivity: (Homo sapiens) UniProt:P31947 Abbreviation:SFN Alternative Names:YWHAS; 14-3-3 sigma Application:ELISA Range:31.25-2000 pg/mL Sensitivity:11.9 pg/mL Intra-AssayCV:?7.1% Inter-AssayCV:?10.2% Recovery:1.03 Sample Type:Serum, Plasma, Other biological fluids Detection Method:Sandwich Analysis Method??:Quantitive Test principle:This assay employs a two-site sandwich ELISA to quantitate SFN in samples. An antibody specific for SFN has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anySFN present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjµgated antibody specific for SFN is added to the wells. After washing, Streptavidin conjµgated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of SFN bound in the initial step. The color development is stopped and the intensity of the color is measured. Product Overview:Stratifin, was shown to be diffusely distributed in the cytoplasm and was present in cµLtured epithelial cells. It was most abundant in tissues enriched in stratified keratinizing epithelium.The induction of 14-3-3-sigma is mediated by a p53 -responsive element located 1.8 kb upstream of its transcription start site. Exogenous introduction of 14-3-3-sigma into cycling cells resµLts in a G2 arrest. After DNA damage, these cells initially arrested in the G2 phase of the cell cycle, but unlike cells containing 14-3-3-sigma, the 14-3-3-sigma -/- cells were unable to maintain cell cycle arrest. The 14-3-3-sigma -/- cells died (mitotic catastrophe) as they entered mitosis. This process was associated with a failure of the 14-3-3-sigma-deficient cells to sequester the proteins that initiate mitosis and prevent them from entering the nucleus. Stability:The stability of ELISA kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition. The loss rate was determined by accelerated thermal degradation test. Keep the kit at 37°C for 4 and 7 days, and compare O.D.values of the kit kept at 37°C with that of at recommended temperature. (referring from China Biological Products Standard, which was calcµLated by the Arrhenius equation. For ELISA kit, 4 days storage at 37°C can be considered as 6 months at 2 - 8°C, which means 7 days at 37°C equaling 12 months at 2 - 8°C).