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J Clin Invest. 2005 Dec;115(12):3363-9.

Structure and function of the platelet integrin alphaIIbbeta3.

Author information

1
Hematology-Oncology Division, Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6058, USA. bennetts@mail.med.upenn.edu

Abstract

The platelet integrin alpha(IIb)beta(3) is required for platelet aggregation. Like other integrins, alpha(IIb)beta(3) resides on cell surfaces in an equilibrium between inactive and active conformations. Recent experiments suggest that the shift between these conformations involves a global reorganization of the alpha(IIb)beta(3) molecule and disruption of constraints imposed by the heteromeric association of the alpha(IIb) and beta(3) transmembrane and cytoplasmic domains. The biochemical, biophysical, and ultrastructural results that support this conclusion are discussed in this Review.

PMID:
16322781
PMCID:
PMC1297263
DOI:
10.1172/JCI26989
[Indexed for MEDLINE]
Free PMC Article
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