Protease Nexin-2/Amyloid β-Protein Precursor Inhibits Factor Xa in the Prothrombinase Complex
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منابع مشابه
Lyso-Sulfatide Binds Factor Xa and Inhibits Thrombin Generation by the Prothrombinase Complex
Blood coagulation reactions are strongly influenced by phospholipids, but little is known about the influence of sphingolipids on coagulation mechanisms. Lysosulfatide (lyso-SF) (sulfogalactosyl sphingosine) prolonged factor Xa (fXa) 1-stage plasma clotting assays, showing it had robust anticoagulant activity. In studies using purified clotting factors, lyso-SF inhibited >90% of prothrombin (II...
متن کاملProthrombin protects factor Xa in the prothrombinase complex from inhibition by the heparin-antithrombin complex.
Heparin is a commonly used anticoagulant drug. It functions primarily by accelerating the antithrombin inhibition of coagulation proteinases, among which factor Xa and thrombin are believed to be the most important targets. There are conflicting results as to whether anticoagulant heparins can catalyze the antithrombin inhibition of factor Xa in the prothrombinase complex (factor Va, negatively...
متن کاملHEMOSTASIS, THROMBOSIS, AND VASCULAR BIOLOGY Prothrombin protects factor Xa in the prothrombinase complex from inhibition by the heparin-antithrombin complex
Heparin is a commonly used anticoagulant drug. It functions primarily by accelerating the antithrombin inhibition of coagulation proteinases, among which factor Xa and thrombin are believed to be the most important targets. There are conflicting results as to whether anticoagulant heparins can catalyze the antithrombin inhibition of factor Xa in the prothrombinase complex (factor Va, negatively...
متن کاملHuman protein S inhibits prothrombinase complex activity on endothelial cells and platelets via direct interactions with factors Va and Xa.
Protein S is a vitamin K-dependent non-enzymatic coagulation factor involved in the regulation of activated protein C (APC). In this paper we report an APC-independent anticoagulant function of protein S. We observed an inhibition of prothrombinase activity on endothelial cells and platelets which was half-maximal at physiological concentrations of free protein S in plasma. On endothelial cells...
متن کاملTissue factor pathway inhibitor and protease nexin-1 are major factor Xa binding proteins on the HepG2 cell surface.
Previous studies indicated that human factor Xa bound to a human hepatocellular carcinoma cell line (HepG2) that constitutively synthesizes a factor V/Va molecule. Factor Xa binding to this cell line was not measurably affected by pretreatment of the cells with anti-factor V IgG and to a large extent (approximately 70%) was calcium-independent, suggesting the presence of cell-surface binding pr...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1995
ISSN: 0021-9258
DOI: 10.1074/jbc.270.40.23468