1. Interdisciplinary Research Institute USR3078; CNRS-Université Lille Nord de France; 50 avenue de Halley; Villeneuve d'Ascq Cedex; France
2. LOEWE Center for Synthetic Microbiology and Department of Biology; Philipps-Universität Marburg; Marburg; Germany
3. Department of Biology; University of Firenze; via Madonna del Piano 6; I-50015; Sesto Fiorentino; Italy
4. Department of Biology; Massachusetts Institute of Technology; Cambridge; MA; 02139; USA
5. INRIA Grenoble - Rhône-Alpes; Montbonnot and Laboratoire de Biométrie et Biologie Evolutive; CNRS UMR 5558, Université Lyon 1, INRA; Villeurbanne; France