1. Laboratory of Basic Science on Healthy Longevity, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan.
2. Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8560, Japan.
3. Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara 630-0192, Japan.