1. Bio-Industry Unit, Technology Research Laboratory, Shimadzu Corporation, 3-9-4, Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0237, Japan
2. Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka,
Suita, Osaka 565-0871, Japan