The Human Angiostatin (Plasminogen) ELISA quantitates Hu Angiostatin in human serum, plasma, or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu Angiostatin.
Principle of the method
The Human Angiostatin solid-phase sandwich ELISA (enzyme-linked immunosorbent assay) is designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody has been pre-coated in the wells of the supplied microplate. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. The sandwich is formed by the addition of the second (detector) antibody, a substrate solution is added that reacts with the enzyme-antibody-target complex to produce measurable signal. The intensity of this signal is directly proportional to the concentration of target present in the original specimen.
Each manufactured lot of this ELISA kit is quality tested for criteria such as sensitivity, specificity, precision, and lot-to-lot consistency. See manual for more information on validation.
Plasminogen is a plasma protein synthesized mostly in the liver. It consists of a single polypeptide chain and has a molecular weight of 88.5 kDa. The plasma concentration is usually in the range of 70 - 200 mg/L. Plasminogen is activated by tissue-plasminogen activator, urokinase and streptokinase, to form plasmin. Activation results from the cleavage and release of the preactivation peptide. Plasmin consists of a heavy (A-) chain which contains 5 kringles and a light (B-) chain with the active site. Plasmin is a trypsin-like protease whose natural substrate is fibrin, with binding sites for fibrin residing on the kringles. Plasmin is essential for fibrinolysis and decreased fibrinolytic potential due to congenital defects in plasmin can lead to recurring thrombosis, thrombophlebitis and pulmonary embolism.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.