Table 1

Correlations between intergenic histone acetylation patterns, levels of gene expression and histone density
ChIP epitope
 Gene expression
 H4 density
 H3 density
 H2B density
H4K16
 -0.18**
 +0.42**
 +0.43**
 +0.35**
H4K8
 -0.15**
 +0.35**
 +0.41**
 +0.35**
H4K12
 -0.08*
 +0.30**
 +0.38**
 +0.30**
H2AK7
 -0.10*
 +0.29**
 +0.30**
 +0.27**
H2BK11
 -0.13**
 +0.29**
 +0.32**
 +0.26**
H2BK16
 -0.13**
 +0.28**
 +0.32**
 +0.26**
H3K14
 -0.10*
 +0.26**
 +0.34**
 +0.27**
H3K23
 -0.04
 +0.15**
 +0.22**
 +0.16*
H3K9
 +0.07
 +0.06
 +0.08*
 +0.07
H3K27
 +0.08*
 -0.03
 +0.00
 +0.02
H3K18
 +0.21**
 -0.08*
 -0.10*
 -0.05

The correlations shown are between intergenic histone acetylation patterns [13] and levels of gene expression (data taken from [13]), and the experimentally mapped densities of tagged histone H4 [8], and untagged H3 and tagged H2B [9]. Pearson correlation coefficients are shown, which can range from -1 (perfect inverse correlation) through 0 (no correlation) to +1 (perfect positive correlation). Correlations were calculated for 1,580 intergenic regions that were represented in all three datasets; significance, *p < 10-3, **p < 10-8.

van Leeuwen and van Steensel Genome Biology 2005 6:113   doi:10.1186/gb-2005-6-6-113