Detection Method:Sandwich
Test principle:This assay employs a two-site sandwich ELISA to quantitate PPID in samples. An antibody specific for PPID has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyPPID present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for PPID 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 PPID bound in the initial step. The color development is stopped and the intensity of the color is measured.
Product Overview:Cyclophilin D, which is located in the matrix of mitochondria, is a component of the mitochondrial permeability transition pore. The pore opening raises the permeability of the mitochondrial inner membrane, allows influx of cytosolic molecules into the mitochondrial matrix, increases the matrix volume, and disrupts the mitochondrial outer membrane. As a result, the mitochondria fall into a functional disorder, so the opening of the pore plays an important role in cell death. Cyclophilin D is thought to regulate the opening of the pore because cyclosporin, which binds to CyP-D, inhibits the pore opening.
Cyclophilin-40 (CyP40, also CYPD) was identified by Kieffer et al. (1992) as a 40-kD cyclophilin-like protein with PPIase activity. In the bovine uterus, CyP40 is a component of the estrogen receptor complex.
