Microbial Genomics Group, Max Planck Institute for Marine Microbiology, Celsiusstr.1, 28359 Bremen, Germany. epruesse@mpi-bremen.de|Microbial Genomics Group, Max Planck Institute for Marine Microbiology, Celsiusstr.1, 28359 Bremen, Germany. epruesse@mpi-bremen.de|Microbial Genomics Group, Max Planck Institute for Marine Microbiology, Celsiusstr.1, 28359 Bremen, Germany. epruesse@mpi-bremen.de