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Mammalian Ryk is a Wnt coreceptor required for stimulation of neurite outgrowth.

Cell | Oct 1, 2004

The Ryk receptor belongs to the atypical receptor tyrosine kinase family. It is a new member of the family of Wnt receptor proteins. However, the molecular mechanisms by which the Ryk receptor functions remain unknown. Here, we report that mammalian Ryk, unlike the Drosophila Ryk homolog Derailed, functions as a coreceptor along with Frizzled for Wnt ligands. Ryk also binds to Dishevelled, through which it activates the canonical Wnt pathway, providing a link between Wnt and Dishevelled. Transgenic mice expressing Ryk siRNA exhibit defects in axon guidance, and Ryk is required for neurite outgrowth induced by Wnt-3a and in the activation of T cell factor (TCF) induced by Wnt-1. Thus, Ryk appears to play a crucial role in Wnt-mediated signaling.

Pubmed ID: 15454084 RIS Download

Mesh terms: Adaptor Proteins, Signal Transducing | Animals | Cell Differentiation | Cell Line | Central Nervous System | DNA-Binding Proteins | Dishevelled Proteins | Drosophila Proteins | Embryo, Mammalian | Frizzled Receptors | Genes, Regulator | Growth Cones | Humans | Lymphoid Enhancer-Binding Factor 1 | Macromolecular Substances | Mice | Mice, Transgenic | Phosphoproteins | Protein Binding | Protein Structure, Tertiary | Proteins | Proto-Oncogene Proteins | RNA, Small Interfering | Receptor Protein-Tyrosine Kinases | Receptors, G-Protein-Coupled | Receptors, Neurotransmitter | Transcription Factors | Wnt Proteins | Wnt1 Protein | Wnt3 Protein | Wnt3A Protein

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Associated grants

  • Agency: NCI NIH HHS, Id: 2R01 CA51462-13

Gene Ontology (Data, Gene Annotation)

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