Heat-map for protein and chromatin features found in 0.5 kb segments over 10 kb regions centered at the insertion sites of reference P-transposons. Percent of fragments that bind a specific protein or display nucleosome density depletion or harbor P-element insertions is color-coded on the bottom. Asterisk -relative content of P-insertions in the segments is shown (see Additional file 2 Table S5). Insertion sites of reference P-transposons are indicated by a solid vertical line. Vertical dashed lines indicate the most likely borders of interbands.