Specific reduction of chromatin accessibility in X
. A) Changes in chromatin accessibility determined from the Dam-only channel for all tiling array probes inside or outside the XSyx4-CG3603 region. Data are shown as 'density plots', which are smoothed histograms. B) Changes in methylation by Dam-HP1 fusion protein. C) Changes in chromatin accessibility in promoters (1 kb regions upstream of transcription start sites) and transcription units in the XSyx4-CG3603 region. P-value according to Wilcoxon rank test.