Figure 2

Percent of shared IS content in Frankia sp. Shared transposase ORFs as a percent of the total number of transposases annotated in Frankia sp (364 ORFs). The majority of ORFs (~67.3%) are shared by strains CcI3 and EAN. Only 29.2% of all transposase ORFs are found in only one strain, with 19.1% unique to EAN alone. This distribution suggests that the majority of transposase ORFs have been maintained by and have proliferated within the Frankia strains despite geographic isolation.