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  • Title: Centriole assembly requires both centriolar and pericentriolar material proteins.
    Author: Dammermann A, Müller-Reichert T, Pelletier L, Habermann B, Desai A, Oegema K.
    Journal: Dev Cell; 2004 Dec; 7(6):815-29. PubMed ID: 15572125.
    Abstract:
    Centrioles organize pericentriolar material to form centrosomes and also template the formation of cilia. Despite the importance of centrioles in dividing and differentiated cells, their assembly remains poorly understood at a molecular level. Here, we develop a fluorescence microscopy-based assay for centriole assembly in the 1-cell stage C. elegans embryo. We use this assay to characterize SAS-6, a centriolar protein that we identified based on its requirement for centrosome duplication. We show that SAS-6, a member of a conserved metazoan protein family, is specifically required for new centriole assembly, a result we confirm by electron microscopy. We further use the centriole assembly assay to examine the roles of three pericentriolar material proteins: SPD-5, the kinase aurora-A, and gamma-tubulin. Our results suggest that the pericentriolar material promotes daughter centriole formation by concentrating gamma-tubulin around the parent centriole. Thus, both centriolar and pericentriolar material proteins contribute to centriole assembly.
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