Marie Courçon

Marie Courçon
Atomic Energy and Alternative Energies Commission | CEA · Centre d'Etudes de Grenoble

Biochemistry, Cellular Biology and Molecular Biology Technician
Clinical Proteomic

About

18
Publications
4,233
Reads
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602
Citations
Additional affiliations
October 2015 - July 2017
Atomic Energy and Alternative Energies Commission, Grenoble
Position
  • Technician
Description
  • Structure et fonction des BET Bromodomaines chez la levure
October 2015 - February 2022
Atomic Energy and Alternative Energies Commission
Position
  • Technician
Description
  • Clinical Proteomics
October 2008 - October 2015
Atomic Energy and Alternative Energies Commission
Position
  • Technician
Description
  • Etude des protéines impliquées dans les jonctions cellulaires adhérentes

Publications

Publications (18)
Article
Full-text available
Cell rigidity sensing—a basic cellular process allowing cells to adapt to mechanical cues—involves cell capabilities exerting force on the extracellular environment. In vivo, cells are exposed to multi-scaled heterogeneities in the mechanical properties of the surroundings. Here, we investigate whether cells are able to sense micron-scaled stiffnes...
Preprint
Full-text available
Animal cells are active, contractile objects. While bioassays address the molecular characterization of cell contractility, the mechanical characterization of the active forces in cells remains challenging. Here by confronting theoretical analysis, finite element modeling and experiments, we analyze the relevance of existing mechanical approaches a...
Article
Full-text available
Invasive fungal infections cause significant morbidity and mortality among immunocompromised individuals, posing an urgent need for new antifungal therapeutic strategies. Here we investigate a chromatin-interacting module, the bromodomain (BD) from the BET family of proteins, as a potential antifungal target in Candida albicans, a major human funga...
Data
Supplementary Figures, Supplementary Tables, Supplementary Methods and Supplementary References
Article
Full-text available
Vascular endothelial cadherin is the main component of adherens junctions enabling cohesion of the endothelial monolayer in vessels. The extracellular part of vascular endothelial cadherin (VE-cadherin) can be cleaved, releasing soluble fragments in blood (sVE-cadherin). In some diseases with endothelial dysfunction, a correlation between increased...
Article
Full-text available
Confining cells on adhesive patterns allows performing robust, weakly dispersed, statistical analysis. A priori, adhesive patterns could be efficient tools to analyze intracellular cell stress fields, in particular when patterns are used to force the geometry of the cytoskeleton. This tool could then be very helpful in deciphering the relationship...
Article
Full-text available
Adherens junctions are required for vascular endothelium integrity. These structures are formed by the clustering of the homophilic adhesive protein VE-cadherin, which recruits intracellular partners, such as β- and α-catenins, vinculin, and actin filaments. The dogma according to which α-catenin bridges cadherin·β-catenin complexes to the actin cy...
Article
Full-text available
Adherens junctions are required for vascular endothelium integrity. These structures are formed by the clustering of the homophilic adhesive protein VE-cadherin, which recruits intracellular partners, such as β- and α-catenins, vinculin, and actin filaments. The dogma according to which α-catenin bridges cadherin·β-catenin complexes to the actin cy...
Article
Endothelial cells express two different classical cadherins, vascular endothelial (VE) cadherin and neural (N) cadherin, having distinct functions in the vascular system. VE-cadherin is specific to endothelial adherens junctions and is strictly necessary for vascular morphogenesis. On the contrary, N-cadherin shows diffuse localization on the cell...
Article
Full-text available
Cyclodipeptides and their derivatives belong to the diketopiperazine (DKP) family, which is comprised of a broad array of natural products that exhibit useful biological properties. In the few known DKP biosynthetic pathways, nonribosomal peptide synthetases (NRPSs) are involved in the synthesis of cyclodipeptides that constitute the DKP scaffold,...
Article
Full-text available
The gene encoding the cytochrome P450 CYP121 is essential for Mycobacterium tuberculosis. However, the CYP121 catalytic activity remains unknown. Here, we show that the cyclodipeptide cyclo(l-Tyr-l-Tyr) (cYY) binds to CYP121, and is efficiently converted into a single major product in a CYP121 activity assay containing spinach ferredoxin and ferred...
Article
Full-text available
Human KIN17 is a 45-kDa eukaryotic DNA- and RNA-binding protein that plays an important role in nuclear metabolism and in particular in the general response to genotoxics. Its amino acids sequence contains a zinc finger motif (residues 28-50) within a 30-kDa N-terminal region conserved from yeast to human, and a 15-kDa C-terminal tandem of SH3-like...
Article
Full-text available
Many studies that aim to characterize the proteome structurally or functionally require the production of pure protein in a high-throughput format. We have developed a fast and flexible integrated system for cloning, protein expression in Escherichia coli, solubility screening and purification that can be completely automated in a 96-well microplat...
Article
Full-text available
DsbA is the strongest protein disulfide oxidant yet known and is involved in catalyzing protein folding in the bacterial periplasm. Its strong oxidizing power has been attributed to the lowered pKa of its reactive active site cysteine and to the difference in thermodynamic stability between the oxidized and the reduced form. However, no structural...
Article
Full-text available
The aim of this work was to produce and to label snake neurotoxins, disulfide-rich proteins. A mutant of a snake toxin, erabutoxin a, was used as a model. Its N-terminal part was fused to ZZ, a synthetic IgG-binding domain of protein A (B. Nilssonet al.,1987,Protein Eng.1, 107–113), thus preventing degradation in the bacterial cytoplasm and providi...

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Projects

Project (1)
Archived project
The differential activities of the cadherin protein : Protocadherin 12, VE-Cadherin, E-Cadherin, N-Cadherin