1. Department of Biology I; LMU Biozentrum; Ludwig-Maximilians University Munich; Großhaderner Str. 2-4 Planegg-Martinsried 82152 Germany
2. Microbial Genomics and Bioinformatics Research Group; Max Planck Institute for Marine Microbiology; Celsiusstr. 1 Bremen 28359 Germany
3. Department of Life Sciences & Chemistry; Jacobs University Bremen; Campus Ring 1 Bremen 28759 Germany
4. Department of Microbiology; University Bayreuth; Bayreuth Germany