Short- and Long-Range Repulsion by the Drosophila Unc5 Netrin Receptor
Copyright policy )Short- and Long-Range Repulsion by the Drosophila Unc5 Netrin Receptor
Netrins are bifunctional guidance molecules, attracting some axons and repelling others. They act through receptors of the DCC and UNC5 families. DCC receptors have been implicated in both attraction and repulsion by Netrins. UNC5 receptors are required only for repulsion. In Drosophila, Netrins are expressed by midline cells of the CNS and by specific muscles in the periphery. They attract commissural and motor axons expressing the DCC family receptor Frazzled. Here we report the identification of the Drosophila Unc5 receptor, and show that it is a repulsive Netrin receptor likely to contribute to motor axon guidance. Ectopic expression of Unc5 on CNS axons can elicit either short- or long-range repulsion from the midline. Both short- and long-range repulsion require Netrin function, but only long-range repulsion requires Frazzled.
Motor Neurons, Neuroscience(all), Growth Cones, Molecular Sequence Data, Gene Expression Regulation, Developmental, Membrane Proteins, Receptors, Cell Surface, Helminth Proteins, Axons, Animals, Genetically Modified, Interneurons, Animals, Drosophila Proteins, Drosophila, Receptors, Growth Factor, Amino Acid Sequence, Caenorhabditis elegans Proteins, Netrin Receptors
Motor Neurons, Neuroscience(all), Growth Cones, Molecular Sequence Data, Gene Expression Regulation, Developmental, Membrane Proteins, Receptors, Cell Surface, Helminth Proteins, Axons, Animals, Genetically Modified, Interneurons, Animals, Drosophila Proteins, Drosophila, Receptors, Growth Factor, Amino Acid Sequence, Caenorhabditis elegans Proteins, Netrin Receptors
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