Detection Method:Sandwich
Test principle:This assay employs a two-site sandwich ELISA to quantitate MARVELD2 in samples. An antibody specific for MARVELD2 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyMARVELD2 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for MARVELD2 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 MARVELD2 bound in the initial step. The color development is stopped and the intensity of the color is measured.
Product Overview:MARVELD2, or tricellulin (TRIC), is an integral membrane protein concentrated at the vertically oriented TJ strands of tricellular contacts.The 555-amino acid protein contains cytoplasmic N and C termini, 2 transmembrane domains, and 2 extracellular loops. Northern blot analysis detected high expression of Tric in epithelium-derived tissues, including small intestine, kidney, and lung. Western blot analysis of mouse epithelial cell lines revealed an approximately 66-kD protein, as well as larger phosphorylated intracellular forms. Immunofluorescence microscopy showed expression of Tric predominantly at tricellular contacts where occludin (OCLN)-positive bicellular TJs converged. Tric-positive structures appeared as short rods through confocal microscopy.
