Representative genome browser track of read coverage profiles of RNA polymerase II (RNAPII) Ser5P (initiation complex), DOT1L and different histone marks (ubiquitination of histone 2B lysine 120 (H2BK120ub), histone 3 lysine 4 trimethylation (H3K4me3), histone 3 lysine 36 trimethylation (H3K36me3), histone 3 lysine 79 mon-, di- and tri-methylation (H3K79me1, H3K79me2 and H3K79me3, respectively)) on two active human protein-coding genes, CDK9 and KPNB1, in the NCITT cell line (chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) data from [49,57]). Read coverage is presented on the left side of each ChIP-seq. The arrow above the gene represents the sense of transcription. All three H3K79 methylation states display a peak immediately downstream of the H3K4me3 peak but upstream of the H3K36me3 broad peak.