1. Department of General Microbiology, GZMB Georg‐August‐University Göttingen, Grisebachstr. 8 Göttingen D‐37077 Germany
2. Department of Microbiology and Immunology University of California, San Francisco San Francisco CA 94158 USA
3. Department of Genomic and Applied Microbiology, GZMB Georg‐August‐University Göttingen Göttingen Germany