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- W2036691875 abstract "The interaction of cells with fibronectin generates a series of complex signaling events that serve to regulate several aspects of cell behavior, including growth, differentiation, adhesion, and motility. The formation of a fibronectin matrix is a dynamic, cell-mediated process that involves both ligation of the α5β1 integrin with the Arg-Gly-Asp (RGD) sequence in fibronectin and binding of the amino terminus of fibronectin to cell surface receptors, termed “matrix assembly sites,” which mediate the assembly of soluble fibronectin into insoluble fibrils. Our data demonstrate that the amino-terminal type I repeats of fibronectin bind to the α5β1 integrin and support cell adhesion. Furthermore, the amino terminus of fibronectin modulates actin assembly, focal contact formation, tyrosine kinase activity, and cell migration. Amino-terminal fibronectin fragments and RGD peptides were able to cross-compete for binding to the α5β1 integrin, suggesting that these two domains of fibronectin cannot bind to the α5β1 integrin simultaneously. Cell adhesion to the amino-terminal domain of fibronectin was enhanced by cytochalasin D, suggesting that the ligand specificity of the α5β1 integrin is regulated by the cytoskeleton. These data suggest a new paradigm for integrin-mediated signaling, where distinct regions within one ligand can modulate outside-in signaling through the same integrin." @default.
- W2036691875 created "2016-06-24" @default.
- W2036691875 creator A5024444500 @default.
- W2036691875 creator A5038879605 @default.
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- W2036691875 date "1998-04-06" @default.
- W2036691875 modified "2023-10-09" @default.
- W2036691875 title "Activation of Distinct α5β1-mediated Signaling Pathways by Fibronectin's Cell Adhesion and Matrix Assembly Domains" @default.
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- W2036691875 doi "https://doi.org/10.1083/jcb.141.1.241" @default.
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