1. Department of Applied Chemistry; Graduate School of Engineering; The University of Tokyo, and JST- ACCEL; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
2. Whitehead Institute for Biomedical Research; 455 Main Street Cambridge MA USA
3. Rigaku Corporation; 3-9-12 Matsubara-cho, Akishima-shi Tokyo 196-8628 Japan
4. Department of Biology; Massachusetts Institute of Technology; Cambridge MA USA