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J Cell Biol. 2012 Dec 24;199(7):1083-101. doi: 10.1083/jcb.201202126. Epub 2012 Dec 17.

Cep164 mediates vesicular docking to the mother centriole during early steps of ciliogenesis.

Author information

1
DKFZ-ZMBH Alliance, German Cancer Research Center, 69120 Heidelberg, Germany.

Abstract

Cilia formation is a multi-step process that starts with the docking of a vesicle at the distal part of the mother centriole. This step marks the conversion of the mother centriole into the basal body, from which axonemal microtubules extend to form the ciliary compartment. How vesicles are stably attached to the mother centriole to initiate ciliary membrane biogenesis is unknown. Here, we investigate the molecular role of the mother centriolar component Cep164 in ciliogenesis. We show that Cep164 was indispensable for the docking of vesicles at the mother centriole. Using biochemical and functional assays, we identified the components of the vesicular transport machinery, the GEF Rabin8 and the GTPase Rab8, as interacting partners of Cep164. We propose that Cep164 is targeted to the apical domain of the mother centriole to provide the molecular link between the mother centriole and the membrane biogenesis machinery that initiates cilia formation.

PMID:
23253480
PMCID:
PMC3529528
DOI:
10.1083/jcb.201202126
[Indexed for MEDLINE]
Free PMC Article

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