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A helical inner scaffold provides a structural basis for centriole cohesion

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Centrioles are microtubule-based organelles found in most eukaryotic cells and that are critical for the formation of cilia and flagella, as well as of centrosomes in animal cells. The number of centrioles must be strictly regulated in proliferating cells ...

Wiley-Blackwell2016

Computational support for a scaffolding mechanism of centriole assembly

Pierre Gönczy, Paul Guichard, Virginie Hamel

Centrioles are essential for forming cilia, flagella and centrosomes. Successful centriole assembly requires proteins of the SAS-6 family, which can form oligomeric ring structures with ninefold symmetry in vitro. While important progress has been made in ...

2016

Centriolar CPAP/SAS-4 Imparts Slow Processive Microtubule Growth

Pierre Gönczy, Nicola Jane Dynes, Ashwani Sharma

Centrioles are fundamental and evolutionarily conserved microtubule-based organelles whose assembly is characterized by microtubule growth rates that are orders of magnitude slower than those of cytoplasmic microtubules. Several centriolar proteins can int ...

2016

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

Isolation, cryotomography, and three-dimensional reconstruction of centrioles

Pierre Gönczy, Paul Guichard, Virginie Hamel, Aitana Neves da Silva

Centrioles and basal bodies (referred to hereafter as centrioles for simplicity) are microtubule-based cylindrical organelles that are typically ∼450-nm long and ∼250nm in diameter. The centriole is composed of three distinct regions: the distal part chara ...

Elsevier2015

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Elsevier2015

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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

Mechanisms of differential centriole inheritance in C. elegans

Lukas von Tobel

Centrosomes are the principal microtubule organizing center (MTOC) of animal cells and comprise a pair of centrioles surrounded by pericentriolar material (PCM). Centriole number must be carefully regulated to ensure bipolar spindle formation and thus fait ...

EPFL2014

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

Pierre Gönczy, Graham Knott, 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

Clathrin regulates centrosome positioning by promoting acto-myosin cortical tension in C. elegans embryos

Pierre Gönczy, Alessandro De Simone, Sylvain Träger, Kalyani Thyagarajan

Regulation of centrosome and spindle positioning is crucial for spatial cell division control. The one-cell Caenorhabditis elegans embryo has proven attractive for dissecting the mechanisms underlying centrosome and spindle positioning in a metazoan organi ...

Company Of Biologists Ltd2014