1. York Structural Biology Laboratory, Department of Chemistry, University of York, York YO10 5DD, U.K.
2. School of Chemistry and Bio21 Molecular Science and Biotechnology Institute and University of Melbourne, Parkville, Victoria 3010, Australia
3. ACRF Chemical Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3010, Australia
4. Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
5. School of Agriculture, Meiji University, Kawasaki, Kanagawa, Japan
6. Institute for Frontier Life and Medical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
7. Micro-Nano Technology Research Center, Hosei University, Koganei, Tokyo, Japan