Laboratory for Genome Exploration Research Group, RIKEN Genomic Sciences Center (GSC), Tsurumi-ku, Yokohama 230-0045, Japan. rgscerg@gsc.riken.go.jp|Laboratory for Genome Exploration Research Group, RIKEN Genomic Sciences Center (GSC), Tsurumi-ku, Yokohama 230-0045, Japan. rgscerg@gsc.riken.go.jp|Laboratory for Genome Exploration Research Group, RIKEN Genomic Sciences Center (GSC), Tsurumi-ku, Yokohama 230-0045, Japan. rgscerg@gsc.riken.go.jp