1. Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA
2. Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
3. Research School of Earth Sciences, Australian National University, Canberra, Australian Capital Territory, Australia
4. Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine, USA
5. DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California, USA