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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zidar, Frank J. Topol, Eric J. Narizhneva, Natalya V. Byzova, Tatiana V. Byers-ward, Vicky J. Quinn, Martin J. Plow, Edward F. |
| Description | Author Affiliation: Narizhneva NV ( Department of Molecular Cardiology, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, Ohio 44195, USA.) |
| Abstract | A serine (Ser-700) amino acid rather than an asparagine (Asn-700) at residue 700 of thrombospondin-1 has been linked to an increased risk for development of premature, familial heart attacks. We now have identified both functional and structural differences between the Ser-700 and Asn-700 thrombospondin-1 variants. The Ser-700 variant increased the rate and extent of platelet aggregation and showed increased surface expression on platelets compared with the Asn-700 variant. These differences could be ascribed to an enhanced interaction of the Ser-700 variant with fibrinogen on the platelet surface and are consistent with a prothrombotic phenotype in Ser-700 individuals. The Ser-700 variant thrombospondin-1 was conformationally more labile than the Asn-700 variant as demonstrated by increased susceptibility to proteolytic digestion and enhanced susceptibility to unfolding by denaturants. These data suggest a potential molecular and cellular basis for a genetic risk factor associated with early onset myocardial infarction. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 20 |
| Volume Number | 279 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2004-05-14 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Asparagine Myocardial Infarction Genetics Polymorphism, Single Nucleotide Serine Thrombospondin 1 Metabolism Circular Dichroism Genetic Variation Epidemiology Platelet Aggregation Physiology Risk Factors Chemistry Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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