INTENDED USE This PCX ELISA kit is a 1.5 hour solid-phase ELISA designed for the quantitative determination of Chicken PCX. This ELISA kit for research use only!
PRINCIPLE OF THE ASSAY PCX ELISA kit applies the competitive enzyme immunoassay technique utilizing a monoclonal anti-PCX antibody and an PCX-HRP conjugate. The assay sample and buffer are incubated together with PCX-HRP conjugate in pre-coated plate for one hour. After the incubation period, the wells are decanted and washed five times. The wells are then incubated with a substrate for HRP enzyme. The product of the enzyme-substrate reaction forms a blue colored complex. Finally, a stop solution is added to stop the reaction, which will then turn the solution yellow. The intensity of color is measured spectrophotometrically at 450nm in a microplate reader. The intensity of the color is inversely proportional to the PCX concentration since PCX from samples and PCX-HRP conjugate compete for the anti-PCX antibody binding site. Since the number of sites is limited, as more sites are occupied by PCX from the sample, fewer sites are left to bind PCX-HRP conjugate. A standard curve is plotted relating the intensity of the color (O.D.) to the concentration of standards. The PCX concentration in each sample is interpolated from this standard curve.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a member of the sialomucin protein family. The encoded protein was originally identified as an important component of glomerular podocytes. Podocytes are highly differentiated epithelial cells with interdigitating foot processes covering the outer aspect of the glomerular basement membrane. Other biological activities of the encoded protein include: binding in a membrane protein complex with Na+/H+ exchanger regulatory factor to intracellular cytoskeletal elements, playing a role in hematopoetic cell differentiation, and being expressed in vascular endothelium cells and binding to L-selectin. [provided by RefSeq, Jul 2008]
Uniprot Description
PODXL: Involved in the regulation of both adhesion and cell morphology and cancer progression. Function as an anti-adhesive molecule that maintains an open filtration pathway between neighboring foot processes in the podocyte by charge repulsion. Acts as a pro-adhesive molecule, enhancing the adherence of cells to immobilized ligands, increasing the rate of migration and cell- cell contacts in an integrin-dependent manner. Induces the formation of apical actin-dependent microvilli. Involved in the formation of a preapical plasma membrane subdomain to set up inital epithelial polarization and the apical lumen formation during renal tubulogenesis. Plays a role in cancer development and aggressiveness by inducing cell migration and invasion through its interaction with the actin-binding protein EZR. Affects EZR- dependent signaling events, leading to increased activities of the MAPK and PI3K pathways in cancer cells. Belongs to the podocalyxin family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Membrane protein, integral; Cell adhesion; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 7q32-q33
Cellular Component: ruffle; extracellular space; lamellipodium; integral to plasma membrane; microvillus membrane; cytoplasm; apical plasma membrane; plasma membrane; filopodium; lipid raft
Molecular Function: protein binding
Biological Process: cell migration; negative regulation of cell-cell adhesion; negative regulation of cell adhesion; cell adhesion; leukocyte migration; positive regulation of cell-cell adhesion mediated by integrin; regulation of microvillus biogenesis; positive regulation of cell migration