Fig. 2

Distribution of histone PTMs in the Ectocarpus genome. a Distribution of eight histone PTMs across six genome feature classes. Intergenic, all intergenic regions except the TSS regions; upstream TSS 500 bp, 500 bp region 5′ to the transcription start site; exon, all exon sequence except first exons; intron, all intron sequence except first introns. The sectors for intergenic, intron and first intron regions have been separated into two to indicate values for regions that contain TEs (white stripes) and regions that do not (full colour). b Distribution of the eight histone PTMs across the complete set of Ectocarpus genes (17,447) sorted by gene body size and centred on the gene body. The black brackets correspond to 15 kb. c Enrichment profiles of the eight histone PTMs for all protein-coding (top panel) and all lncRNA (bottom panel) genes. Gene bodies are plotted as proportional lengths, upstream and downstream intergenic regions in kilobases. d Representative region of chromosome 4 showing profiles of mapped ChIP-seq reads for the eight histone PTMs in the sporophyte (SP) and gametophyte (GA) generations. Light blue boxes represent transposons (TEs). Grey boxes and arrows represent exons superimposed on genes represented by a black line. e Pearson correlation scores for comparisons of the genomic distributions of ChIP-seq signal peaks for the eight histone PTMs