1Department of Chemistry and Biochemistry, University of Colorado, Boulder, USA
2Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, USA
3Department of Microbiology, University of Pennsylvania, Philadelphia, USA
4Cooperative Institute for Research in Environmental Sciences and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, USA
5Department of Computer Science, University of Colorado, Boulder, USA
6Center for Genome Sciences, Washington University School of Medicine, St. Louis, USA
7Computational Genomics Laboratory, John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia.,
8Department of Biology, San Diego State University, San Diego, USA
9Department of Microbiology, Cornell University, Ithaca, USA
10Luca Technologies, Golden, USA
11Howard Hughes Medical Institute, Boulder, USA