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Immobilization of Caenorhabditis elegans to Analyze Intracellular Transport in Neurons
Published on: October 18, 2017
IFT-Cargo Interactions and Protein Transport in Cilia
1Department of Cellular Biology, University of Georgia, 635C Biological Science Building, 1000 Cedar Street, Athens, GA 30602, USA.
Abstract:
The motile and sensory functions of cilia and flagella are indispensable for human health. Cilia assembly requires a dedicated protein shuttle, intraflagellar transport (IFT), a bidirectional motility of multi-megadalton protein arrays along ciliary microtubules. IFT functions as a protein carrier delivering hundreds of distinct proteins into growing cilia. IFT-based protein import and export continue in fully grown cilia and are required for ciliary maintenance and sensing. Large ciliary building blocks might depend on IFT to move through the transition zone, which functions as a ciliary gate. Smaller, freely diffusing proteins, such as tubulin, depend on IFT to be concentrated or removed from cilia. As I discuss here, recent work provides insights into how IFT interacts with its cargoes and how the transport is regulated.
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