The mission of the PFBMI is to provide an added value to a great variety of biological projects, enabling the characterization of the intrinsic properties of macromolecules and their assemblies (size, shape, folding, stability auto-association,…) and of the interactions in which they are involved (stoichiometry, thermodynamic and kinetic parameters, …). PFBMI equipments are available for the entire scientific community, in France and abroad, but a priority is given to teams from Institut Pasteur and the Institut Pasteur International Network.