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Concept

Basal body

Publications associées (30)

Purification of centrosomes from mammalian cell lines

Paul Guichard

Centrosomes act as the main microtubule-organizing centre of animal cells and play critical roles in the cell, such as mitotic spindle organization, cell polarity, and motility. They are composed of two barrel-shaped structures, the centrioles, surrounded ...

Elsevier Academic Press Inc2015

The Caenorhabditis elegans protein SAS-5 forms large oligomeric assemblies critical for centriole formation

Pierre Gönczy, Georgios Hatzopoulos

Centrioles are microtubule-based organelles crucial for cell division, sensing and motility. In Caenorhabditis elegans, the onset of centriole formation requires notably the proteins SAS-5 and SAS-6, which have functional equivalents across eukaryotic evol ...

2015

Multiciliogenesis: multicilin directs transcriptional activation of centriole formation

Pierre Gönczy, Fernando Romero Balestra

During differentiation of multiciliated cells, numerous centrioles are generated in each cell to act as templates for the formation of a corresponding number of cilia. A new study reveals that multicilin, a protein required for multiciliogenesis, is a key ...

Cell Press2014

SAS-1 Is a C2 Domain Protein Critical for Centriole Integrity in C. elegans

Graham Knott, Pierre Gönczy, Simon Blanchoud, Lukas von Tobel, Tamara Mikeladze-Dvali

Centrioles are microtubule-based organelles important for the formation of cilia, flagella and centrosomes. Despite progress in understanding the underlying assembly mechanisms, how centriole integrity is ensured is incompletely understood, including in sp ...

Public Library of Science2014

Caenorhabditis elegans centriolar protein SAS-6 forms a spiral that is consistent with imparting a ninefold symmetry

Pierre Gönczy, Paul Guichard, Georgios Hatzopoulos, Virginie Hamel

Centrioles are evolutionary conserved organelles that give rise to cilia and flagella as well as centrosomes. Centrioles display a characteristic ninefold symmetry imposed by the spindle assembly abnormal protein 6 (SAS-6) family. SAS-6 from Chlamydomonas ...

2013

Native Architecture of the Centriole Proximal Region Reveals Features Underlying Its 9-Fold Radial Symmetry

Pierre Gönczy, Davide Demurtas, Paul Guichard, Aitana Neves da Silva

Centrioles are cylindrical microtubule-based structures whose assembly is critical for the formation of cilia, flagella, and centrosomes. The centriole proximal region harbors a cartwheel that dictates the 9-fold symmetry of centrioles. Although the cartwh ...

2013

Towards a molecular architecture of centriole assembly

Pierre Gönczy

The centriole is an evolutionarily conserved macromolecular structure that is crucial for the formation of flagella, cilia and centrosomes. The ultrastructure of the centriole was first characterized decades ago with the advent of electron microscopy, reve ...

2012

Phage Selection of Bicyclic Peptide Ligands and Development of a New Peptide Cyclisation Method

Jeremy Touati

Bicyclic peptides binding to targets of interest can be isolated from combinatorial libraries using a phage display-based approach. In a first project of this thesis, we aimed at generating bicyclic peptide inhibitors of matrix metalloproteinases (MMPs), a ...

EPFL2012

Structural Basis of the 9-Fold Symmetry of Centrioles

Pierre Gönczy, Debora Keller

The centriole, and the related basal body, is an ancient organelle characterized by a universal 9-fold radial symmetry and is critical for generating cilia, flagella, and centrosomes. The mechanisms directing centriole formation are incompletely understood ...

2011

PP2A Phosphatase Acts upon SAS-5 to Ensure Centriole Formation in C. elegans Embryos

Pierre Gönczy, Debora Keller

Centrosome duplication occurs once per cell cycle and ensures that the two resulting centrosomes assemble a bipolar mitotic spindle. Centriole formation is fundamental for centrosome duplication. In Caenorhabditis elegans, the evolutionarily conserved prot ...

Cell Press - Elsevier2011