Bioinformatics Group, Genomic Sciences Center, RIKEN, 1-7-22, Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan. gscope@gsc.riken.go.jp|Bioinformatics Group, Genomic Sciences Center, RIKEN, 1-7-22, Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan. gscope@gsc.riken.go.jp|Bioinformatics Group, Genomic Sciences Center, RIKEN, 1-7-22, Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan. gscope@gsc.riken.go.jp