1. Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, California 94720, United States
2. Feedstocks Division, Joint BioEnergy Institute, Emeryville, California 94608, United States
3. Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California 94705, United States
4. Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California 94720, United States
5. Biochemistry, Molecular, Cellular and Developmental Biology Graduate Group, University of California, Davis, California 95616, United States
6. Innovative Genomics Institute, University of California, Berkeley, California 94720, United States