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

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

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 ++ - - - - -
  1. 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).