Transcription-coupled recruitment of human CHD1 and CHD2 influences chromatin accessibility and histone H3 and H3.3 occupancy at active chromatin regions

Table 1 Summary of promoter and enhancer chromatin states identified by Ernst et al. in relation to histone methylation and acetylation

Chromatin state	H3K4me1	H3K4me2	H3K4me3	H3K27me3	H3K9ac	H3K27ac
Active promoter	+	+++	+++	-	+++	+++
Weak Promoter	++	+++	+++	-	+	++
Inactive promoter	++	+++	++	+++	-	+
Enhancer state 4	+++	+++	++	-	+++	+++
Enhancer state 5	+++	++	-	-	+	+++
Enhancer state 6	++	+++	-	-	-	-
Enhancer state 7	++	-	-	-	-	-

The frequency of a given mark at each chromatin state is identified as not present (-; <5% frequency), low (+; 5 to 40% frequency), abundant (++; 40 to 70% frequency) or highly abundant (+++; 70 to 100% frequency).

ISSN: 1756-8935