1. Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, California, USA
2. QB3/Chemistry Mass Spectrometry Facility, University of California, Berkeley, California, USA
3. DOE Joint Genome Institute, Walnut Creek, California, USA
4. Department of Bioengineering, University of California, Berkeley, California, USA
5. Department of Plant and Microbial Biology, University of California, Berkeley, California, USA