Fig. 4

Annotated genomic loci and expression profiles of Hydractinia echinata H1.2, H2A.Z, macroH2A and CENP-A. a H1.2 expression in feeding (Ai) and male sexual polyps (Aii). RNA-Seq mapping shows that H1.2 transcripts are found in larva, female, feeding polyps and highly abundant in male polyps (green wedge; RNA-Seq track). The annotated genomic locus of H1.2 shows its coding sequence, mapped RNA reads (showing the number of reads mapped), a predicted TATA-boxes and a polyA signal. The gene contains two exons. H1.2 expression is replication-independent, and its transcripts do not exclusively co-localise with EdU-positive S-phase cells (red wedge; Aiii). b H2A.Z expression in feeding polyps. RNA-Seq shows that the gene contains five exons, of which 2 are non-coding. The H2A.Z transcript is abundant in all life stages. The annotated genomic locus of H2A.Z shows its coding sequence, mapped RNA reads (showing the number of reads mapped), a predicted TATA-box and a polyA signal. c The annotated genomic locus of macroH2A showing its coding sequence, mapped RNA reads (showing the number of reads mapped), a predicted TATA-box and polyA signal. The gene contains eight exons. d The annotated genomic locus of CENP-A shows its coding sequence, mapped RNA reads (showing the number of reads mapped), a predicted TATA-box and a polyA signal. The gene contains two exons