1. Laboratory of Biological Macromolecules
2. Laboratory of Enzymology
3. Laboratory of Protein Crystallography, Center for Protein Engineering
4. Laboratoire de Crystallographie et Crystallogenèse des Protéines, Institut de Biologie Structurale J.-P. Ebel, CEA/CNRS/UJ.F, 38027 Grenoble Cedex 1, France.