Figure 1

Four distinct mitochondrial (mt) genome structures in Babesia microti (A) and Babesia rodhaini (B). These mt genomes possess two pairs of inverted repeats, IR-A and IR-B. Genes shown above bold line are transcribed from left to right and those below from right to left. Light and dark gray blocks indicate fragments of small subunit (SSU) and large subunit (LSU) rRNA genes, respectively. Abbreviations: cox1, cytochrome c oxidase subunit 1 gene; cox3, cytochrome c oxidase subunit 3 gene; cob, cytochrome b gene. Black arrowheads, r1, r2 and r3 in the B. microti mt genome and r in the B. rodhaini mt genome, indicate short direct or inverted repeat sequences (see Additional file 2: Table S1 and Additional file 1: Figure S4).