1. Department of Cell Biology, Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan.
2. ERATO, Iwata Human Receptor Crystallography Project, Japan Science and Technology Agency, Sakyo-ku, Kyoto, Japan.
3. Research Acceleration Program, Membrane Protein Crystallography Project, Japan Science and Technology Agency, Sakyo-ku, Kyoto, Japan.
4. Department of Quantitative Biology and Medicine, Research Center for Advanced Science and Technology, University of Tokyo, Meguro-ku, Tokyo, Japan.
5. Systems and Structural Biology Center, RIKEN, Tsurumi-ku, Yokohama, Japan.
6. Division of Molecular Bioscience, Membrane Protein Crystallography Group, Imperial College London, London, United Kingdom.