1. a Science of Biological Resource, The United Graduate School of Agricultural Science , Gifu University , Gifu
2. b Amano Enzyme Inc. , Gifu R&D Center , Sue‐cho, Kakamigahara, Gifu
3. c Institute for Chemical Research , Kyoto University , Kyoto
4. d Department of Biological Chemistry , Shizuoka University , Shizuoka