Fig. 6

Stepwise transposition of Sfru_Hel1A in S. frugiperda. a Schematic structures of core sequence and exemplars in S. frugiperda. The 131-bp 5′-end and 30-bp 3′-end sequences are colored in pink and blue, respectively. The A, B and C regions are in green, red and black, respectively. Typical structural features of Helitron elements including characteristic 5′-TC and 3′-CTRY nucleotide termini were boxed. b Multiple alignment of core sequence and the consensus sequences of Hel1 exemplars in S. frugiperda