Publications de Charlotte Julie Caroline Gehin

The conformational plasticity of structurally unrelated lipid transport proteins correlates with their mode of action

Giovanni D'Angelo, Charlotte Julie Caroline Gehin

AU Lipid: Pleaseconfirmthatallheadinglevelsarerepresentedcorrectly transfer proteins (LTPs) are key players in cellular homeostasis : and regulation, as they coordinate the exchange of lipids between different cellular organelles. Despite their importance, ...

2024

Membrane specificity of the human cholesterol transfer protein STARD4

Charlotte Julie Caroline Gehin

STARD4 regulates cholesterol homeostasis by transferring cholesterol between the plasma membrane and endoplasmic reticulum. The STARD4 structure features a helix-grip fold surrounding a large hydrophobic cavity holding the sterol. Its access is controlled ...

Academic Press Ltd- Elsevier Science Ltd2024

Differential Effects of Post-translational Modifications on the Membrane Interaction of Huntingtin Protein

Hilal Lashuel, Matteo Dal Peraro, Luciano Andres Abriata, Charlotte Julie Caroline Gehin, Zhidian Zhang

Huntington's disease is a neurodegenerative disorder caused by an expanded polyglutamine stretch near the N-terminus of the huntingtin (HTT) protein, rendering the protein more prone to aggregate. The first 17 residues in HTT (Nt17) interact with lipid mem ...

Amer Chemical Soc2024

CERT1 mutations perturb human development by disrupting sphingolipid homeostasis

Bruno Lemaitre, Paolo De Los Rios, Giovanni D'Angelo, Evelyne Ruchti, Sylvia Ho, Samuel Rommelaere, Charlotte Julie Caroline Gehin, Laura Capolupo, Greta Limoni, Huixin Guo

Neural differentiation, synaptic transmission, and action potential propagation depend on membrane sphingolipids, whose metabolism is tightly regulated. Mutations in the ceramide transporter CERT (CERT1), which is involved in sphingolipid biosynthesis, are ...

American Society for Clinical Investigation2023

Structure and regulation of the myotonic dystrophy kinase-related Cdc42-binding kinase

Charlotte Julie Caroline Gehin

Protein kinases of the dystonia myotonica protein kinase (DMPK) family are critical regulators of actomyosin contractility in cells. The DMPK kinase MRCK1 is required for the activation of myosin, leading to the develop-ment of cortical tension, apical con ...

CELL PRESS2023

The role of PTM crosstalks in Httex1 structure, aggregation and membrane interaction

Hilal Lashuel, Matteo Dal Peraro, Luciano Andres Abriata, Lucien Fabrice Krapp, Charlotte Julie Caroline Gehin, Anass Chiki, Driss Boudeffa, Rajasekhar Kolla, Zhidian Zhang

CELL PRESS2022

GRASP55 regulates intra-Golgi localization of glycosylation enzymes to control glycosphingolipid biosynthesis

Giovanni D'Angelo, Charlotte Julie Caroline Gehin, Laura Capolupo, Riccardo Rizzo

The Golgi apparatus, the main glycosylation station of the cell, consists of a stack of discontinuous cisternae. Glycosylation enzymes are usually concentrated in one or two specific cisternae along the cis-trans axis of the organelle. How such compartment ...

WILEY2021

Structures of three MORN repeat proteins and a re-evaluation of the proposed lipid-binding properties of MORN repeats

Charlotte Julie Caroline Gehin

MORN (Membrane Occupation and Recognition Nexus) repeat proteins have a wide taxonomic distribution, being found in both prokaryotes and eukaryotes. Despite this ubiquity, they remain poorly characterised at both a structural and a functional level compare ...

2020

The Role of Post-translational Modifications on the Energy Landscape of Huntingtin N-Terminus

Hilal Lashuel, Charlotte Julie Caroline Gehin

Huntington disease is a neurodegenerative disease characterized by a polymorphic tract of polyglutamine repeats in exon 1 of the huntingtin protein, which is thought to be responsible for protein aggregation and neuronal death. The polyglutamine tract is p ...

2019

Structural and functional dissection of the DH and PH domains of oncogenic Bcr-Abl tyrosine kinase

Florence Pojer, Oliver Hantschel, Sandrine Madeleine Suzanne Georgeon, Barbara Gerig, Charlotte Julie Caroline Gehin, Sina Maren Reckel, Tim Kükenshöner, Delphine Maude Tardivon, Sara Raquel Pereira Pinho

The two isoforms of the Bcr-Abl tyrosine kinase, p210 and p190, are associated with different leukemias and have a dramatically different signaling network, despite similar kinase activity. To provide a molecular rationale for these observations, we study ...

Springer Nature2017