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Rab GTPases as coordinators of vesicle traffic.

Nature reviews. Molecular cell biology

metabolism, rab GTP-Binding Proteins, enzymology, Transport Vesicles, Signal Transduction, Membrane Fusion, Humans, Disease, Biological Transport, Animals

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      Membrane trafficking between organelles by vesiculotubular carriers is fundamental to the existence of eukaryotic cells. Central in ensuring that cargoes are delivered to their correct destinations are the Rab GTPases, a large family of small GTPases that control membrane identity and vesicle budding, uncoating, motility and fusion through the recruitment of effector proteins, such as sorting adaptors, tethering factors, kinases, phosphatases and motors. Crosstalk between multiple Rab GTPases through shared effectors, or through effectors that recruit selective Rab activators, ensures the spatiotemporal regulation of vesicle traffic. Functional impairments of Rab pathways are associated with diseases, such as immunodeficiencies, cancer and neurological disorders.

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