Fig. 3.—

Comparison of casposons integrated into the three different genomic loci of M. mazei. TIR and tRNA genes are depicted with blue triangles and red rectangle, respectively. Pairwise BLASTn hits between the casposons are indicated by different shades of gray (the identity scale is included). TPR, tetratricopeptide; PolB, family B DNA polymerase; HNH, HNH endonuclease; DDE TPase, transposase of the DDE superfamily (named after two aspartate and one glutamate residues that form the catalytic triad of these enzymes); HTH-h, helix-turn-helix protein with a C-terminal HEAT repeat domain; PPR, pentapeptide repeat.