Molecular mechanisms underlying the role of the centriolar CEP164-TTBK2 complex in ciliopathies

Investor logo

SILVA Ivan Rosa e BINÓ Lucia JOHNSON Christopher M. RUTHERFORD Trevor J. NEUHAUS David ANDREEVA Antonina ČAJÁNEK Lukáš BREUGEL Mark van

Year of publication 2022
Type Article in Periodical
Magazine / Source Structure
MU Faculty or unit

Faculty of Medicine

Keywords CEP164; TTBK2; ciliaciliogenesis; ciliopathy; nephronophthisis; basal body; centriole; distal appendage; centrosome
Description Cilia formation is essential for human life. One of the earliest events in the ciliogenesis program is the recruitment of tau-tubulin kinase 2 (TTBK2) by the centriole distal appendage component CEP164. Due to the lack of high-resolution structural information on this complex, it is unclear how it is affected in human ciliopathies such as nephronophthisis. Furthermore, it is poorly understood if binding to CEP164 influences TTBK2 activities. Here, we present a detailed biochemical, structural, and functional analysis of the CEP164-TTBK2 complex and demonstrate how it is compromised by two ciliopathic mutations in CEP164. Moreover, we also provide insights into how binding to CEP164 is coordinated with TTBK2 activities. Together, our data deepen our understanding of a crucial step in cilia formation and will inform future studies aimed at restoring CEP164 functionality in a debilitating human ciliopathy.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info