EphA Receptors Regulate Growth Cone Dynamics through the Novel Guanine Nucleotide Exchange Factor Ephexin
In: Cell, Jg. 105 (2001-04-01), Heft 2, S. 233-244
Online
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Zugriff:
Eph receptors transduce short-range repulsive signals for axon guidance by modulating actin dynamics within growth cones. We report the cloning and characterization of ephexin, a novel Eph receptor-interacting protein that is a member of the Dbl family of guanine nucleotide exchange factors (GEFs) for Rho GTPases. Ephrin-A stimulation of EphA receptors modulates the activity of ephexin leading to RhoA activation, Cdc42 and Rac1 inhibition, and cell morphology changes. In addition, expression of a mutant form of ephexin in primary neurons interferes with ephrin-A-induced growth cone collapse. The association of ephexin with Eph receptors constitutes a molecular link between Eph receptors and the actin cytoskeleton and provides a novel mechanism for achieving highly localized regulation of growth cone motility.
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EphA Receptors Regulate Growth Cone Dynamics through the Novel Guanine Nucleotide Exchange Factor Ephexin
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Autor/in / Beteiligte Person: | Corfas, Gabriel ; Neve, Rachel L. ; Sahin, Mustafa ; Estrach, Soline ; Lin, Michael Z. ; Goldberg, Jeffrey L. ; Greenberg, Michael E. ; Shamah, Steven M. ; Debant, Anne ; Bazalakova, Mihaela H. ; Hu, Linda |
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Zeitschrift: | Cell, Jg. 105 (2001-04-01), Heft 2, S. 233-244 |
Veröffentlichung: | Elsevier BV, 2001 |
Medientyp: | unknown |
ISSN: | 0092-8674 (print) |
DOI: | 10.1016/s0092-8674(01)00314-2 |
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