Publications de Mathieu Rebeaud

Subtle variations in a client protein determine bacterial Hsp90 dependence

Chaperones ensure protein homeostasis and are conserved across species. The ATP-dependent chaperone Hsp90 is present from bacteria to eukaryotes, where it stabilizes and activates a wide range of substrate proteins called clients. However, what determines ...

Elsevier BV2025

Hsp110 Nucleotide Exchange Factors may amplify Hsp70-disaggregation by enhanced entropic pulling

Paolo De Los Rios, Mathieu Rebeaud, Bruno Claude Daniel Fauvet

Hsp70s use energy from ATP hydrolysis to unfold protein structures and solubilize stable aggregates and accumulate native species, even under adverse non-native conditions. To carry out its catalytic polypeptide-unfolding activity, Hsp70 needs to reversibl ...

Elsevier BV2025

Autorepression of yeast Hsp70 cochaperones by intramolecular interactions involving their J-domains

Paolo De Los Rios, Satyam Tiwari, Pierre Goloubinoff, Bruno Claude Daniel Fauvet, Mathieu Rebeaud, Adélaïde Alice Mohr

The 70 kDa heat shock protein (Hsp70) chaperones control protein homeostasis in all ATP-containing cellular compartments. J-domain proteins (JDPs) coevolved with Hsp70s to trigger ATP hydrolysis and catalytically upload various substrate polypeptides in ne ...

Elsevier Science Inc2024

J-domain proteins: From molecular mechanisms to diseases

Paolo De Los Rios, Mathieu Rebeaud

Here, we report on the latest findings related to JDP functions presented at a dedicated JDP workshop in Gdansk, Poland. The report does not include all (details) of what was shared and discussed at the meeting, because some of these original data have not ...

2024

Single-molecule evidence of Entropic Pulling by Hsp70 chaperones

Paolo De Los Rios, Chan Cao, Mathieu Rebeaud

Hsp70 chaperones are central components of the cellular network that ensures the structural quality of proteins. Despite crucial roles in processes such as protein disaggregation and protein translocation into organelles, their physical mechanism of action ...

Nature Research2024

An outmoded in vitro-inferred mechanism for chaperonin-accelerated protein refolding is confirmed in cells by cryo-electron tomography

Paolo De Los Rios, Mathieu Rebeaud

ELSEVIER SCIENCE INC2024

Data-driven large-scale genomic analysis reveals an intricate phylogenetic and functional landscape in J-domain proteins

Paolo De Los Rios, Alessandro Barducci, Stefano Zamuner, Mathieu Rebeaud, Duccio Malinverni

The 70-kD heat shock protein (Hsp70) chaperone system is a central hub of the proteostasis network that helps maintain protein homeostasis in all organisms. The recruitment of Hsp70 to perform different and specific cellular functions is regulated by the J ...

National Academy of Sciences2023

Design of an Arabidopsis thaliana reporter line to detect heat-sensing and signaling mutants

Mathieu Rebeaud

BackgroundGlobal warming is a major challenge for plant survival and growth. Understanding the molecular mechanisms by which higher plants sense and adapt to upsurges in the ambient temperature is essential for developing strategies to enhance plant tolera ...

2023

Repair or Degrade: the Thermodynamic Dilemma of Cellular Protein Quality-Control

Paolo De Los Rios, Bruno Claude Daniel Fauvet, Pierre Goloubinoff, Satyam Tiwari, Mathieu Rebeaud

Life is a non-equilibrium phenomenon. Owing to their high free energy content, the macromolecules of life tend to spontaneously react with ambient oxygen and water and turn into more stable inorganic molecules. A similar thermodynamic picture applies to th ...

FRONTIERS MEDIA SA2021