[1] RIKEN, SPring 8 Ctr, Harima Inst, Sayo, Hyogo 6795148, Japan
[2] RIKEN, Yokohama Inst, Genom Sci Ctr, Tsurumi Ku, Yokohama, Kanagawa 2300045, Japan
[3] Osaka Univ, Grad Sch Sci, Dept Biol Sci, Osaka 5600043, Japan
[4] Univ Tokyo, Grad Sch Sci, Dept Biochem & Biophys, Bunkyo Ku, Tokyo 1130033, Japan