1. Enzyme
Research Team, Biomass Engineering Research Division, Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
2. Systems
and Structural Biology Center, Yokohama Institute, RIKEN, Tsurumi,
1-7-22 Suehiro-cho, Tsurumi-ku, Kanagawa 230-0045, Japan