Institute of Structural Biology 2 articles published in JoVE Biochemistry Online Size-exclusion and Ion-exchange Chromatography on a SAXS Beamline Martha E. Brennich1, Adam R. Round2,3, Stephanie Hutin4 1Structural Biology Group, European Synchrotron Radiation Facility, 2European Molecular Biology Laboratory, 3School of Chemical and Physical Sciences, Keele University, 4Groupe de Microscopie Electronique et Méthodes, Institut de Biologie Structurale The determination of the solution structure of a protein by small angle X-ray scattering (SAXS) requires monodisperse samples. Here, we present two possibilities to ensure minimal delays between sample preparation and data acquisition: online size-exclusion chromatography (SEC) and online ion-exchange chromatography (IEC). Bioengineering Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis Yanxia Hou1, Maria Genua1, Laurie-Amandine Garçon1, Arnaud Buhot1, Roberto Calemczuk1, David Bonnaffé2, Hugues Lortat-Jacob3, Thierry Livache1 1Structure et Propriétés d'Architectures Moléculaires, Institut Nanosciences et Cryogénie, CEA-Grenoble, 2Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris-Sud, 3Institut de Biologie Structurale A novel approach is described for construction of electronic tongue (eT), which greatly simplifies the design and production of sensing materials, and allows the eT to generate continuous evolution profiles and landscapes for samples in liquid. The obtained eT is efficient for common protein analysis such as discrimination.
