1. Graduate School of Agricultural Science Kobe University Rokkodai 1‐1 Kobe Hyogo 657‐8501 Japan
2. RIKEN Center for Sustainable Resource Science Suehiro‐cho 1‐7‐22 Yokohama Kanagawa 230‐0045 Japan
3. Central Laboratories for Key Technologies Kirin Co. Ltd. Fukuura 1‐13‐5 Yokohama Kanagawa 236‐0004 Japan
4. Department of Chemistry and Materials Science Tokyo Institute of Technology Ookayama 2‐12‐1 Meguro Tokyo 152‐8551 Japan
5. Institute for Chemical Research Kyoto University Uji Kyoto 611‐0011 Japan
6. Department of Biotechnology Graduate School of Engineering Osaka University Yamadaoka 2‐1 Suita Osaka 565‐0871 Japan