Principle of the Assay: Functionally active uPA will bind to the biotinylated human PAI-1 coated on the microtiter plate. Only free active enzyme will react with the PAI-1 on the plate. Inactive or complexed enzyme will not be detected. After appropriate washing steps, anti-rat uPA primary antibody binds to the captured enzyme. Excess antibody is washed away and bound monoclonal antibody is then reacted with the secondary antibody conjugated to horseradish peroxidase. TMB substrate is used for color development at 450nm. A standard calibration curve is prepared along with the samples to be measured using dilutions of uPA.
Background: Urokinase plasminogen activator is a serine protease that activates plasminogen to plasmin in the blood fibrinolytic system. It is also implicated in events related to cell invasion/migration [3].
NCBI and Uniprot Product Information
NCBI Description
displays a post-transcriptional increase in enzyme levels in chemically induced mammary carcinoma; may play a role in tumor invasion and metastasis [RGD, Feb 2006]
Uniprot Description
uPA: Specifically cleave the zymogen plasminogen to form the active enzyme plasmin. Defects in PLAU are the cause of Quebec platelet disorder (QPD). QPD is an autosomal dominant bleeding disorder due to a gain-of-function defect in fibrinolysis. Although affected individuals do not exhibit systemic fibrinolysis, they show delayed onset bleeding after challenge, such as surgery. The hallmark of the disorder is markedly increased PLAU levels within platelets, which causes intraplatelet plasmin generation and secondary degradation of alpha-granule proteins. Belongs to the peptidase S1 family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Secreted; Secreted, signal peptide; EC 3.4.21.73; Motility/polarity/chemotaxis; Protease
Cellular Component: extracellular space; focal adhesion; cell surface; membrane
Molecular Function: peptidase activity; serine-type endopeptidase activity; kinase activity
Biological Process: wound healing; smooth muscle cell migration; skeletal muscle regeneration; proteolysis; positive regulation of smooth muscle cell migration; regulation of cell proliferation; fibrinolysis; regulation of cell adhesion mediated by integrin; response to hyperoxia; regulation of smooth muscle cell migration; positive regulation of cell proliferation; response to hypoxia; spermatogenesis; response to activity; regulation of receptor activity; angiogenesis; phosphorylation; embryo implantation
Research Articles on PLAU
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Product Notes
The General PLAU plau (Catalog #AAA135544) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA135544 ELISA Kit recognizes General PLAU. It is sometimes possible for the material contained within the vial of "uPA functional assay, ELISA Kit" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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