1. Department of General Microbiology; Georg August University Göttingen; Grisebachstr. 8 Göttingen 37077 Germany
2. Department of Genetics, Bacterial Genetics; Friedrich Schiller University Jena; Philosophenweg 12 Jena 07743 Germany
3. Department of Genomic and Applied Microbiology; Georg August University Göttingen; Grisebachstr. 8 Göttingen 37077 Germany