Figure 2From: The evolutionary dynamics of the Helena retrotransposon revealed by sequenced Drosophila genomesHelena structure in Drosophila species. Structure of the reference copies of Helena-like elements. DNA sequences: AAA, poly-A tail. Protein sequences: gag, nucleocapsid-like domain; RTase, reverse transcriptase; *: position of start codons; #: position of stop codons. D. simulans and D. melanogaster structures are from Rebollo et al. [18]. The sequences are in Additional file 1.Back to article page