Comparing the correlation of ΔH3K14ac between immediate neighboring genes of different directions. The correlation was calculated by a bootstrap analysis (repeated 1000 times) across all neighboring parallel (→ →), divergent (← →) and convergent (→ ←) pairs. The ΔH3K14ac level of a gene was defined as the mean level of ΔH3K14ac in its translated region. (A) Mean correlation of gene pairs with different transcriptional directions (Par, parallel pairs; Div, divergent pairs; Con, convergent pairs). The error bar is the standard deviation. (B) Distribution of correlation for divergent (red), parallel (blue) and convergent (green) gene pairs. (C) Distribution of correlation for parallel (red) and divergent (blue) pairs whose ORF 5' distance was 600~1200 bp. (D) Distribution of correlation of parallel (red) and convergent (green) pairs whose ORF 5' distance was 1600~3600 bp.