Predicted secondary structures of dinoflagellate mitochondrial LSU rRNA fragments. RNA sequences were deduced from RNA and DNA sequences, and structures were modelled on the secondary structure of E. coli LSU rRNA. Fragments correspond to K. micrum RNA2, LSUA, LSUE, LSUG and RNA10, and H. triquetra LSUF. Note that the potential hairpin at the 5' end of RNA10 does not have a counterpart in E. coli LSU RNA. Only a portion of the RNA2 cDNA sequence is shown; also, the actual 5' terminus of LSUA (and LSUF) likely extends past the sequence shown. Positions of the dinoflagellate fragments are mapped onto the full E. coli LSU rRNA structure, inset. Putative Watson-Crick and wobble base pairs are indicated by lines and dots respectively, GoA pairs by open circles, and non-canonical pairs by closed circles. Positions enclosed by a circle are editing sites, with the post-edited nucleotide shown. Oligoadenylation is indicated by italics. Helices are numbered according to the E. coli 23S rRNA structure .