1. Center for Development of Therapeutics, Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, Massachusetts 02142, United States
2. School of Molecular Sciences, Arizona State University, 797 East Tyler Street, Tempe, Arizona 85281, United States
3. Department of Chemistry, Graduate School of Science, Chiba University, Inage-ku, Chiba, 1-33 Yayoi-cho, Inage, Chiba 263-8522, Japan
4. Membrane Protein Research and Molecular Chirality Research Centers, Chiba University, Inage-ku, Chiba, 1-33 Yayoi-cho, Inage, Chiba 263-8522, Japan
5. Structure Biology Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, 1-1 Oho, Ibaraki 305-0801, Japan