FIG. 1.

Phylogenetic relationships of amino acid sequences of transposase genes of Anabaena sp. ISs and their homologs in the following families are shown: IS5 (A), IS200-IS605 (IS1341, including IS891, and IS608) (B), IS630 (including IS895) (C), IS982 (D), ISAzo13 (E), and ISL3 (F). Percentages of replicate trees, greater than 50%, in which the associated transposases clustered together in the bootstrap test (1000 replicates) are shown above the branches. Each tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances, number of amino acid substitutions per site, that are used to infer a phylogenetic tree.