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Multiple alignment (mafft [63]) of ompA-containing region for ancestral rickettsiae (R. helvetica, R. canadensis), transitional group rickettsiae and R. rickettsii. Sequence identity graph (50 bp sliding window) is shown at top. Multiple CDS predicted in the ompA region for R. akari (NC_009881) are annotated as hypothetical proteins. 255 bp tandem repeat elements in Tillamook 23 are shown as blue arrows. Aligned gap positions are shown as thin horizontal lines.
