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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1992-4-23
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pubmed:abstractText |
In this study, the ability of factor Xa to protect factor Va from proteolysis by activated protein C (APC) was verified. Interestingly, factor X was found to exert a similar effect with a dose-dependence identical to that of factor Xa. The effects of factor X and Xa were abrogated in the presence of protein S. To further assess the interactions of factor Va with factors Xa, X and APC, direct binding studies were performed. Factor X and Xa bound to factor Va with equal efficacy. Both proteins displaced APC from its factor Va binding site. These interactions were calcium-dependent. Although the binding of factor Xa devoid of its principal calcium binding site (the Gla-domain) to factor Va was identical to that observed using the native protein, its APC inhibitory effects were significantly reduced. These findings suggest that the Gla-domain of factor X (Xa) is pivotal in the protection of factor Va from APC.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Factor Va,
http://linkedlifedata.com/resource/pubmed/chemical/Factor X,
http://linkedlifedata.com/resource/pubmed/chemical/Factor Xa,
http://linkedlifedata.com/resource/pubmed/chemical/Glycoproteins,
http://linkedlifedata.com/resource/pubmed/chemical/Protein C,
http://linkedlifedata.com/resource/pubmed/chemical/Protein S
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0957-5235
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
2
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
723-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1839223-Binding Sites,
pubmed-meshheading:1839223-Blood Coagulation,
pubmed-meshheading:1839223-Calcium,
pubmed-meshheading:1839223-Factor Va,
pubmed-meshheading:1839223-Factor X,
pubmed-meshheading:1839223-Factor Xa,
pubmed-meshheading:1839223-Glycoproteins,
pubmed-meshheading:1839223-Humans,
pubmed-meshheading:1839223-Protein Binding,
pubmed-meshheading:1839223-Protein C,
pubmed-meshheading:1839223-Protein S
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pubmed:year |
1991
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pubmed:articleTitle |
Regulation of activated protein C by factor Xa.
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pubmed:affiliation |
Department of Medicine, Monash Medical School, Victoria, Australia.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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