6533b7dbfe1ef96bd1271577
RESEARCH PRODUCT
Comm Sorts Robo to Control Axon Guidance at the Drosophila Midline
Krystyna KelemanKarin PaihaDavid TeisBarry J. DicksonSrikanth RajagopalanLukas A. HuberGerhard M. TechnauDiana Cleppiensubject
Central Nervous SystemEmbryo NonmammalianEndosomeGrowth ConesMolecular Sequence DataEndocytic cycleDown-RegulationNerve Tissue ProteinsReceptors Cell SurfaceCell CommunicationEndosomesBiologyModels BiologicalFunctional LateralityGeneral Biochemistry Genetics and Molecular BiologySequence Homology Nucleic AcidEctodermmedicineAnimalsDrosophila ProteinsReceptors ImmunologicAxonTransport VesiclesReceptorSequence Homology Amino AcidBiochemistry Genetics and Molecular Biology(all)Stem CellsCell MembraneGraft SurvivalGene Expression Regulation DevelopmentalMembrane ProteinsCell DifferentiationAnatomyCommissureSlitProtein Structure TertiaryCell biologyProtein TransportDrosophila melanogastermedicine.anatomical_structureCOS CellsRoundaboutAxon guidanceStem Cell Transplantationdescription
AbstractAxon growth across the Drosophila midline requires Comm to downregulate Robo, the receptor for the midline repellent Slit. We show here that comm is required in neurons, not in midline cells as previously thought, and that it is expressed specifically and transiently in commissural neurons. Comm acts as a sorting receptor for Robo, diverting it from the synthetic to the late endocytic pathway. A conserved cytoplasmic LPSY motif is required for endosomal sorting of Comm in vitro and for Comm to downregulate Robo and promote midline crossing in vivo. Axon traffic at the CNS midline is thus controlled by the intracellular trafficking of the Robo guidance receptor, which in turn depends on the precisely regulated expression of the Comm sorting receptor.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-08-01 | Cell |