National Institute of Infectious Diseases - Department of Virology II, National Institute of Infectious Diseases - Department of Virology II, National Institute of Infectious Diseases - Department of Virology II, National Institute of Infectious Diseases - Department of Virology II, Kyushu University - Department of Biology, National Institute of Advanced Industrial Science and Technology (AIST) - Cellular and Molecular Biotechnology Research Institute, RIKEN Center for Biosystems Dynamics Research - Drug Discovery Structural Biology Platform Unit, Nagahama Institute of Bio-Science and Technology - Department of Bioscience, Nara Institute of Science and Technology - Graduate School of Science and Technology, Kyushu University - Department of Biology, Kyushu University - Department of Biology, Hokkaido University - Center for Research and Education on Drug Discovery, Kyushu University - Department of Virology, National Institute of Infectious Diseases - Department of Virology II, National Institute of Infectious Diseases - Department of Virology I, Indiana University Bloomington - Department of Epidemiology and Biostatistics, National Center for Global Health and Medicine - AIDS Clinical Center, Tokyo University of Science - Faculty of Pharmaceutical Sciences, Tokyo University of Science - Faculty of Pharmaceutical Sciences, Tokyo University of Science - Department of Applied Biological Science, National Institute of Infectious Diseases - Department of Pathology, RIKEN Center for Life Science Technologies - Division of Structural and Synthetic Biology, Kyushu University - Department of Virology, Hokkaido University - Laboratory of Biomolecular Science, National Institute of Infectious Diseases - AIDS Research Center, National Institute of Infectious Diseases - Department of Virology II, National Institute of Infectious Diseases - Department of Virology I, University of Tokyo - International Research Center for Neurointelligence, Kyushu University - Department of Biology, National Institute of Infectious Diseases - Department of Virology III, University of Oxford - Nuffield Department of Medicine and National Institute of Infectious Diseases - Department of Virology II