
Frequency distributions of six novel orientation-independent motifs around representative and Gaussian outron/exon-TSSs. Individual motifs are given new identifiers BiSL1-A–F. The distributions of the reverse complements of individual motifs are shown in the last two columns. P-values according to the Wilcoxon rank-sum test (see Methods) are shown for the distributions around representative outron/exon-TSSs.











