Fig. 7
Minimum free energy secondary structure prediction for putative retrozyme RNAs deduced from different metazoan genomes: a the anemone Nematostella vectensis, b the trematode Schistosoma mansoni (tRNAGlu sequence is shown in blue), c the tick Argas monolakensis and d the newt Cynops pyrrhogaster. Insets in each panel show the structure of the type I HHR. Similar representative examples of structures of metazoan retrozyme RNAs are shown in Additional file 11. HHR sequences are shown in purple, and the self-cleavage site is indicated with an arrow. Numbering starts at the self-cleavage site of the HHR