Fig. 2From: Using bioinformatic and phylogenetic approaches to classify transposable elements and understand their complex evolutionary historiesGraphical representation of the replicative, integrative, and structural components contributing to TE diversity. a Diversity of polymerase-phosphotransferase combinations in mobile elements. The main types of polymerases and endonucleases are in boldface, and are also shown in single-letter codes along the two respective axes. Two-letter combinations are shown for each TE type at the intersections. b Same, with addition of structural components in the third dimension. c A 2-D grid listing the currently known combinations of polymerases and endonucleases. A few additional types of endonucleases found only in group I introns are not shown for simplicityBack to article page