Transcriptional profiles of helitron-specific helicases and captured genes. Five representative RNA-seq profiles of the helitron families and subfamilies (A to E). The gene models predicted by JGI are shown in blue. Empty arrows represent manually annotated genes. The expression of the N00, PC9 and PC15 RepHel helicases and captured genes by RT-qPCR is shown in F. The Y axis of F represents the arbitrary units (RQ ) relative to the expression of the reference gene pep.