You are here : Home > Research entities > I2BC@SACLAY > Bioenergetics, Structural Biology and Mechanisms Unit

SB2SM - UMR 9198

Bioenergetics, Structural Biology and Mechanisms Unit


Published on 31 March 2021
Research carried out in the Unit of Bioenergetics, Structural Biology and Mechanisms aims at understanding how the different levels of organisation of biological macromolecules define their function. Principal studies concern soluble and membrane protein architectures, involved in the biological processes of bioenergetics, oxidative stress, and genome control and repair.
HEAD​ Bruno Robert​+33 1 69 08 34 09 
DEPUTY HEAD​ Francis Haraux​+33 1 69 08 98 91 

This unit is part of the Institute of Integrative Biology of the Cell (
I2BC), established on 1 January 2015 (mixed research unit (UMR) 9198, CEA/CNRS/Paris Sud university).   

Extensive use is made of approaches combining biochemistry, molecular biology and genetics, together with structural and spectroscopic methods. This combination of techniques can provide information on a wide range of different scales.

  •  At the atomic scale, EPR, Raman and infrared absorption spectroscopy yield information on the detailed structure of protein active sites, and how this structure is related to protein function. Time-resolved techniques may be used for determining the reaction pathways in these active sites.
  • At a molecular scale, the structure of the protein and of the interaction surfaces necessary for the formation of active complexes may be obtained from NMR spectroscopy and crystallography.
  • At a multi-molecular or cellular scale, studying the composition, the structure and the dynamics of multi-subunit protein assemblies yields information on the regulation of complex processes in vivo.

SB²SM is composed of six laboratories: 

Biology and biotechnology of cyanobacteria

Laboratory of Fundamental Mechanisms in Bioenergetics

Laboratory of bioenergetics, metalloproteins and stress

Structural biology and radiobiology laboratory

Laboratory of membrane proteins and membrane sytems

Oxidative stress and detoxification laboratory