Anticoagulant protein C--structural and functional studies
Anticoagulant protein C is a vitamin K-dependent factor circulating in plasma as a zymogen of a serine protease. It is converted to its active form (APC) by the thrombin-thrombomodulin complex on the surface of endothelial cells. APC inhibits the generation of thrombin by selective proteolytic inactivation procoagulant factors Va and VIIIa. Protein S, another vitamin K-dependent protein, serves as