1. Fundamental Technology Labs., Institute for Innovation, Ajinomoto Co., Inc., Kawasaki, Japan
2. Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, Imizu, Japan
3. Asano Active Enzyme Molecule Project, ERATO, JST, 5180 Kurokawa, Imizu, Toyama, Japan
4. Department of Biotechnology, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo, Japan