Centrobin homologues identified in different species localize on daughter centrioles. In Drosophila melanogaster sensory neurons, Centrobin (referred to as CNB in Drosophila) inhibits basal body function. These data open the question of CNB's role in spermatocytes, where daughter and mother centrioles become basal bodies. In this study, we report that in these cells, CNB localizes equally to mother and daughter centrioles and is essential for C-tubules to attain the right position and remain attached to B-tubules as well as for centrioles to grow in length. CNB appears to be dispensable for meiosis, but flagellum development is severely compromised in CNB mutant males. Remarkably, three N-terminal POLO phosphorylation sites that are critical for CNB function in neuroblasts are dispensable for spermatogenesis. Our results underpin the multifunctional nature of CNB that plays different roles in different cell types in Drosophila, and they identify CNB as an essential component for C-tubule assembly and flagellum development in Drosophila spermatogenesis.

Reina, J., Gottardo, M., Riparbelli, M.G., Llamazares, S., Callaini, G., Gonzalez, C. (2018). Centrobin is essential for c-tubule assembly and flagellum development in drosophila melanogaster spermatogenesis. THE JOURNAL OF CELL BIOLOGY, 217(7), 2365-2372 [10.1083/jcb.201801032].

Centrobin is essential for c-tubule assembly and flagellum development in drosophila melanogaster spermatogenesis

Gottardo, Marco;Riparbelli, Maria G.;Callaini, Giuliano;
2018-01-01

Abstract

Centrobin homologues identified in different species localize on daughter centrioles. In Drosophila melanogaster sensory neurons, Centrobin (referred to as CNB in Drosophila) inhibits basal body function. These data open the question of CNB's role in spermatocytes, where daughter and mother centrioles become basal bodies. In this study, we report that in these cells, CNB localizes equally to mother and daughter centrioles and is essential for C-tubules to attain the right position and remain attached to B-tubules as well as for centrioles to grow in length. CNB appears to be dispensable for meiosis, but flagellum development is severely compromised in CNB mutant males. Remarkably, three N-terminal POLO phosphorylation sites that are critical for CNB function in neuroblasts are dispensable for spermatogenesis. Our results underpin the multifunctional nature of CNB that plays different roles in different cell types in Drosophila, and they identify CNB as an essential component for C-tubule assembly and flagellum development in Drosophila spermatogenesis.
Reina, J., Gottardo, M., Riparbelli, M.G., Llamazares, S., Callaini, G., Gonzalez, C. (2018). Centrobin is essential for c-tubule assembly and flagellum development in drosophila melanogaster spermatogenesis. THE JOURNAL OF CELL BIOLOGY, 217(7), 2365-2372 [10.1083/jcb.201801032].
File in questo prodotto:
File Dimensione Formato  
Centrobin is essential for C-tubule assembly and.pdf

accesso aperto

Tipologia: PDF editoriale
Licenza: Creative commons
Dimensione 1.7 MB
Formato Adobe PDF
1.7 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1063812