Molecules and Cells

Korean Society for Molecular and Cellular Biology (한국분자세포생물학회)
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The Ciliary Transition Zone: Finding the Pieces and Assembling the Gate

  • Received : 2017.04.03
  • Accepted : 2017.04.05
  • Published : 2017.04.30
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Abstract

Eukaryotic cilia are organelles that project from the surface of cells to fulfill motility and sensory functions. In vertebrates, the functions of both motile and immotile cilia are critical for embryonic development and adult tissue homeostasis. Importantly, a multitude of human diseases is caused by abnormal cilia biogenesis and functions which rely on the compartmentalization of the cilium and the maintenance of its protein composition. The transition zone (TZ) is a specialized ciliary domain present at the base of the cilium and is part of a gate that controls protein entry and exit from this organelle. The relevance of the TZ is highlighted by the fact that several of its components are coded by ciliopathy genes. Here we review recent developments in the study of TZ proteomes, the mapping of individual components to the TZ structure and the establishment of the TZ as a lipid gate.

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References

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