Affiliation: | 1. Institute for Protein Research, Osaka University, Suita, Osaka 565-0871 Japan;2. Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Higashi-Hiroshima, Hiroshima 739-0046 Japan;3. National Institute for Physiological Sciences, Okazaki, Aichi 444-8787 Japan;4. Department of Virology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima 734-8551 Japan |