Vitronectin, Human Plasma

Vitronectin and plasminogen activator inhibitor type 1 are proteins that interact in the circulatory system and pericellular region to regulate fibrinolysis, cell adhesion, and migration. Plasminogen activator inhibitor type 1, a serine proteinase, through its binding to the plasma protein vitronectin, influences processes that are key regulators of hemostatic process, for example, thrombosis and wound healing. In addition, the vitronectin and plasminogen activator inhibitor type 1 complex regulates binding of blood platelets and cells to extracellular substrata in events like tumor metastasis. The plasma concentration of vitronectin is 200 to 400 μg/ml.