TFBSs tend to appear at fixed distance in the TEs that we studied. The case of MER41B is reported as an example. In A is shown the logo of ERα ChIP-seq regions carrying GATA-3 and ERR at the fixed distance of 24 nts (measured from start to start of these motifs). The multi-alignment of these regions is shown in B, together with genomic location and associated TE. C: distance distribution between GATA-3 and ERR in ERα ChIP-seq peaks. Notice that in all the three insets of the figure the reverse complement of the logo usually reported by Transfac is used.