1. Institut des Biomolécules Max Mousseron, UMR 5247, CNRS, Universités Montpellier 1, Montpellier 2, BP 14491, 15 Avenue Charles Flahault, 34093 Montpellier Cedex 5, France, Zentaris GmbH, Weismuellerstrasse 50, 60314 Frankfurt am Main, Germany, and Department of Experimental Medicine, School of Medicine, University of Milano-Bicocca, Via Cadore 48, 20052 Monza (MI), Italy