Purification of human vitamin K-dependent protein S and its limited proteolysis by thrombin
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چکیده
منابع مشابه
Monoclonal antibodies to human vitamin K-dependent protein S.
Monoclonal antibodies to human protein S have been prepared using established hybridoma technology. One antibody was isolated that binds protein S only when Ca2+ is present; others bind antigen equally well in the presence or absence of EDTA. Other antibodies display a diminished affinity for protein S in the presence of EDTA. Purified immunoglobulins from cell lines displaying Ca2+ dependence ...
متن کاملProbing protein structure by limited proteolysis.
Limited proteolysis experiments can be successfully used to probe conformational features of proteins. In a number of studies it has been demonstrated that the sites of limited proteolysis along the polypeptide chain of a protein are characterized by enhanced backbone flexibility, implying that proteolytic probes can pinpoint the sites of local unfolding in a protein chain. Limited proteolysis ...
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Protein S is an anticoagulant plasma protein, functioning as a cofactor to activated protein C in the regulation of blood coagulation. In addition, protein S forms a complex with the complement regulatory protein, C4b-binding protein. Protein S is unique among the vitamin K-dependent proteins in being structurally similar to androgen binding proteins. Protein S immunoreactivity was demonstrated...
متن کاملA new vitamin K-dependent protein. Purification from bovine plasma and preliminary characterization.
Four proteins active in blood coagulation have long been known to require vitamin K for their proper biosynthesis: factors II, VII, IX, and X. This paper describes the purification of a hitherto unrecognized vitamin K-dependent glycoprotein from bovine plasma. The biosynthesis of this protein is interfered with by the vitamin K antagonist Dicoumarol. The molecular weight of the protein is appro...
متن کاملA case report of temporary and acquired vitamin K-dependent clotting factor deficiency without any response to administrated vitamin K
Abstract Background and Objectives Vitamin K-dependent clotting factor deficiency (VKCFD) is usually an acquired problem due to liver disease, malabsorption, and overdose of warfarin. In the present paper the significance and role of vitamin K-dependent coagulation factors in menorrhagia were evaluated. Case We present a rare case of 43 year woman with acquired vitamin K deficiency and se...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1983
ISSN: 0264-6021
DOI: 10.1042/bj2090837