14–17 Mar 2023
Europe/Paris timezone

Septin oligomerization induces Membrane Remodeling

15 Mar 2023, 11:40
20m

Speaker

Dr Pierre-Emmanuel Milhiet (CBS, University of Montpellier)

Description

Septins are now recognized as a novel component of the cytoskeleton. They are highly conserved proteins in eukaryotes, which form oligomers by self-assembling into linear complexes and higher-order structures, including filaments, bundles and rings. The structure and functions of septins are intimately linked to cell membranes through their interaction with phosphatidylinositol phosphate lipids. They participate in a wide spectrum of cellular processes and the regulation of their expression is also associated with many pathologies.

To better understand the molecular mechanisms associated with septins function in membrane remodeling, we used supported lipid bilayers whose composition mimics the inner leaflet of the eukaryotic plasma membrane. We explored the effects of septins on these model membranes using correlative microscopy combining Atomic Force and fluorescence Microscopy, as well as high-speed atomic force microscopy.

Session Molecular interactions at the membrane surface

Primary author

Dr Pierre-Emmanuel Milhiet (CBS, University of Montpellier)

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