1. Department of Chemistry, University of California, Davis, One Shields Ave, Davis, California 95616, United States
2. Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Straße des 17 Juni 135, D-10623 Berlin, Germany
3. Department of Molecular and Cell Biology, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
4. Department of Biological Sciences, Faculty of Sciences, Shizuoka University, 836, Ohya, Suruga-ku, Shizuoka-Shi, Shizuoka-Ken 422-8529, Japan