Classification and copy numbers of pea retrotransposons based on their reverse transcriptase domains. Individual groups of retrotransposons were classified according to their position within the phylogenetic trees or based on their best BLAST hits (Additional files 4 and 5). Ogre retrotransposons were further classified into several subfamilies as shown in the Additional file 4.
Macas et al. BMC Genomics 2007 8:427 doi:10.1186/1471-2164-8-427