[1] Kyoto Univ, Grad Sch Med, Dept Cell Biol, Kyoto, Japan
[2] ERATO, JST, Kyoto, Japan
[3] Scripps Res Inst, Dept Mol Biol, San Diego, CA USA
[4] Kyushu Univ, Grad Sch Pharmaceut Sci, Fukuoka, Fukuoka, Japan
[5] Imperial Coll, Div Mol Biosci, London, England
[6] Diamond Light Source, Didcot, Oxon, England
[7] Univ Calif San Diego, Skaggs Sch Pharm & Pharmaceut Sci, San Diego, CA 92103 USA