Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2164-11-414/MediaObjects/12864_2010_Article_3008_Fig4_HTML.jpg)
Comparison of SeqA Chip-Chip with wt and Δ seqA E. coli reveals high background. A Whole genome plot of SeqA ChIP signal for E. coli ΔseqA (green) and E. coli wt (red; as in Fig. 2) B Correlation of ChIP signal with number of GATC sites. Probes were grouped according to the number of GATC sites in a region of 500 bp surrounding the probe middle position and the corresponding ChIP signals are given as boxplots.