1. Department of Molecular Microbiology; Groningen Biomolecular Sciences and Biotechnology Institute University of Groningen; The Netherlands
2. Stratingh Institute for Chemistry; University of Groningen; The Netherlands
3. Department of Biology, Interfaculty Institute of Microbiology and Infection Medicine Tübingen; University of Tübingen; Tübingen Germany
4. Molecular Genetics Group, Groningen Biomolecular Sciences and Biotechnology Institute; Centre for Synthetic Biology, University of Groningen; The Netherlands
5. Department of Fundamental Microbiology, Faculty of Biology and Medicine; University of Lausanne, Biophore Building; Lausanne CH-1015 Switzerland