1. Yokoyama CytoLogic Project, ERATO, JST c/o RIKEN, Hirosawa, Wako-shi, Saitama 351-0198, Japan Genomic Sciences Center, RIKEN Hirosawa, Wako-shi, Saitama 351-0198, Japan Department of Biophysics and Biochemistry Graduate School of Science, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan