Biochemistry, Biophysics & Structural Biology Department

Biochemistry, Biophysics and Structural Biology Department

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Director: 

 Sylvie Nessler

sylvie.nessler@i2BC.paris-saclay.fr 

Deputy  Directors:

dautreaut

    Benoit D’Autréaux 

benoit.dautreaux@I2BC.paris-saclay.fr

Julie Ménétrey

julie.menetrey@i2BC.paris-saclay.fr 

 Françoise Ochsenbein

françoise.ochsenbein@I2BC.paris-saclay.fr  

The department is interested in protein architectures and studies how their different structural levels and interactions regulate their functions.

Focus

The B3S teams study soluble and membrane protein assemblies involved in major biological processes of eukaryotic and bacterial cells. 

Our aim is to  understand the molecular mechanisms of biological structures and biochemical reactions at different scales, from electrons and protons via atoms and molecules to multicellular organisms. 

Approaches

Biochemical reactions, interactions and enzymatic processes, including large conformational changes and rearrangements within proteins and their complexes, are often initiated by a transfer of subatomic particles – electrons and protons. Studying the atomic structures of proteins with and without ligands can for example help determine how the structure of the active site enables an enzyme to perform its activity.

At molecular scales, biochemical and biophysical analyses as well as structure determination of protein-protein, or protein-nucleic acid complexes, helps in describing the interaction of biological assemblies and understanding biochemical reactions.  In vitro reconstitution of cellular functions leads to an understanding of the regulation of complex processes in vivo.

Research groups

Group Leader

A. URVOAS-CISSE

Group Leaders

F. OCHSENBEIN & R. GUEROIS

Publications

Schvartz, Marion, Florent Saudrais, Yves Boulard, Jean-Philippe Renault, Céline Henry, Stéphane Chédin, Serge Pin, and Jean-Christophe Aude. 2024. “Dual Fractions Proteomic Analysis of Silica Nanoparticle Interactions with Protein Extracts.” Materials (Basel, Switzerland) 17 (19): 4909. https://doi.org/10.3390/ma17194909.
Mendoza-Munoz, Pamela L., Narva Deshwar Kushwaha, Dineshsinha Chauhan, Karim Ben Ali Gacem, Joy E. Garrett, Joseph R. Dynlacht, Jean-Baptiste Charbonnier, Navnath S. Gavande, and John J. Turchi. 2024. “Impact of Optimized Ku-DNA Binding Inhibitors on the Cellular and In Vivo DNA Damage Response.” Cancers 16 (19): 3286. https://doi.org/10.3390/cancers16193286.
Magne, Chloe, Simona Streckaite, Roberto A. Boto, Eduardo Domínguez-Ojeda, Marina Gromova, Andrea Echeverri, Flavio Siro Brigiano, et al. 2024. “Perylene-Derivative Singlet Exciton Fission in Water Solution.” Chemical Science, October. https://doi.org/10.1039/d4sc04732j.
Mezzetti, Alberto, Winfried Leibl, Jeanette A. Johnson, and J. Thomas Beatty. 2024. “Monitoring Molecular Events during Photo-Driven Ubiquinone Pool Reduction in PufX+ and PufX- Membranes from Rhobobacter Capsulatus by Time-Resolved FTIR Difference Spectroscopy.” Plant Physiology and Biochemistry: PPB 216 (September):109139. https://doi.org/10.1016/j.plaphy.2024.109139.
Labidi, Raphaël J., Bruno Faivre, Philippe Carpentier, Julien Perard, Philipp Gotico, Yun Li, Mohamed Atta, and Marc Fontecave. 2024. “Light-Activated Artificial CO2-Reductase: Structure and Activity.” Journal of the American Chemical Society, October. https://doi.org/10.1021/jacs.4c08927.

Education

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