Table 1. Histone modification types.

Histone modification	Modification type
H2A.Z	Active
H3K4me1	Active
H3K4me2	Active
H3K4me3	Active
H3K9me1	Active
H3K9me2	Repressive
H3K9me3	Repressive
H3K27me1	Active
H3K27me2	Moderate
H3K27me3	Repressive
H3K36me1	Moderate
H3K36me3	Active
H3K79me1	Moderate
H3K79me2	Moderate
H3K79me3	Moderate
H3R2me1	Moderate
H3R2me2	Moderate
H4K20me1	Active
H4K20me3	Moderate
H4R3me2	Moderate
H2BK5me1	Active

Each modification is clustered into active, repressive or moderate type based on their association with active or repressed genes. Moderate marks show a dual tendency toward active and repressed genes.