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Microbial Genomics and Bioinformatics Research Group, Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany, Department of Botany, University of British Columbia, Vancouver V6T 1Z4, Canada, Department of Zoology, University of British Columbia, Vancouver V6T 1Z4, Canada, Ribocon GmbH, D-28359 Bremen, Germany, School of Engineering and Science, Jacobs University Bremen gGmbH, D-28759 Bremen, Germany and Lehrstuhl für Mikrobiologie, Technische Universität München, D-853530 Freising, Germany.