Detection Method:Sandwich
Test principle:This assay employs a two-site sandwich ELISA to quantitate SFTA2 in samples. An antibody specific for SFTA2 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anySFTA2 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for SFTA2 is added to the wells. After washing, Streptavidin conjugated 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 SFTA2 bound in the initial step. The color development is stopped and the intensity of the color is measured.
Product Overview:SFTPGis an amphipathic surfactant protein essential for lung function and homeostasis after birth. Pulmonary surfactant is a surface-active lipoprotein complex composed of 90% lipids and 10% proteins which include plasma proteins and apolipoproteins SPA, SPB, SPC and SPD. The surfactant is secreted by the alveolar cells of the lung and maintains the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung. The SPB enhances the rate of spreading and increases the stability of surfactant monolayers in vitro. Multiple mutations in this gene have been identified, which cause pulmonary surfactant metabolism dysfunction type 1, also called pulmonary alveolar proteinosis due to surfactant protein B deficiency, and are associated with fatal respiratory distress in the neonatal period.
