1. Department of Biology, Appalachian State University, Boone, NC 28608, USA
2. Swette Center for Environmental Biotechnology at the Biodesign Institute, Arizona State University, Tempe, AZ 85287-4501, USA
3. Department of Energy, Joint Genome Institute, Walnut Creek, CA 94598, USA
4. Los Alamos National Laboratory, Los Alamos, NM 87545, USA
5. Scripps Institution of Oceanography, La Jolla, CA 92093, USA
6. Department of Natural Resources, Cornell University, Ithaca, NY 14853, USA
7. Department of Microbiology, Cornell University, Ithaca, NY 14853, USA