1. Joint BioEnergy Institute, Emeryville, California 94608
2. Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, California 94720
3. Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
4. Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720
5. Cellulose Production Research Team, Biomass Engineering Program, Center for Sustainable Resource Science, RIKEN, Yokohama 230-0045, Japan
6. Graduate School of Biological Sciences, Nara Institute of Science and Technology, 630-0192 Nara, Japan
7. Plant and Microbial Biology, University of California, Berkeley, California 94720