1. Department of Molecular Microbiology; Groningen Biomolecular Sciences and Biotechnology Institute; Centre for Synthetic Biology; University of Groningen; Nijenborgh 7 9747 AG Groningen the Netherlands
2. Molecular Genetics Group; Groningen Biomolecular Sciences and Biotechnology Institute; Centre for Synthetic Biology; University of Groningen; Nijenborgh 7 9747 AG Groningen the Netherlands
3. Department of Biology; Northeastern University; Boston MA USA
4. Centre for Bacterial Cell Biology; Newcastle University; Newcastle upon Tyne UK