Lipid oxidation inactivates the anticoagulant function of protein Z-dependent protease inhibitor (ZPI)
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چکیده
منابع مشابه
Structural basis for catalytic activation of protein Z-dependent protease inhibitor (ZPI) by protein Z.
The anticoagulant serpin, protein Z-dependent protease inhibitor (ZPI), is catalytically activated by its cofactor, protein Z (PZ), to regulate the function of blood coagulation factor Xa on membrane surfaces. The X-ray structure of the ZPI-PZ complex has shown that PZ binds to a unique site on ZPI centered on helix G. In the present study, we show by Ala-scanning mutagenesis of the ZPI-binding...
متن کاملPolymorphisms of the protein Z-dependent protease inhibitor (ZPI) gene and the risk of venous thromboembolism.
Thromb Haemost 2006; 95: 909–10 Dear Sir, Protein Z-dependent protease inhibitor (ZPI), together with its cofactor protein Z (PZ), inhibits activated factor Xa (Xa) (1–3). Studies in mice showed that the PZ null genotype increases the mortality in utero of homozygous factor V Leiden mice due to vascular thrombosis and hepatic fibrin deposition (4), suggesting a role for the PZ-ZPI pathway in th...
متن کاملTHROMBOSIS AND HEMOSTASIS Structural basis for catalytic activation of protein Z–dependent protease inhibitor (ZPI) by protein Z
The anticoagulant serpin, protein Z-dependent protease inhibitor (ZPI), is catalytically activated by its cofactor, protein Z (PZ), to regulate the function of blood coagulation factor Xa on membrane surfaces. The X-ray structure of the ZPI-PZ complex has shown that PZ binds to a unique site on ZPI centered on helix G. In the present study, we show by Ala-scanning mutagenesis of the ZPIbinding ...
متن کاملThe protein Z/protein Z-dependent protease inhibitor complex.
Protein Z (PZ) is a vitamin K-dependent factor identified in human plasma in 1984 but it has no enzymatic activity. It is a cofactor of a serpin, the protein Z-dependent protease inhibitor (ZPI), and the complex PZ/ZPI inhibits activated factor X on phospholipid surfaces. In mice, the disruption of PZ or ZPI gene is asymptomatic, but enhances the thrombotic phenotype and mortality of other thro...
متن کاملCharacterization of the protein Z-dependent protease inhibitor.
Protein Z-dependent protease inhibitor (ZPI) is a 72-kd member of the serpin superfamily of proteinase inhibitors that produces rapid inhibition of factor Xa in the presence of protein Z (PZ), procoagulant phospholipids, and Ca(++) (t(1/2) less than 10 seconds). The rate of factor Xa inhibition by ZPI is reduced more than 1000-fold in the absence of PZ. The factor Xa-ZPI complex is not stable t...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2017
ISSN: 0021-9258
DOI: 10.1074/jbc.m117.793901