Figure 1

Phyletic distribution of MitoCOGs (blue) and their nuclear-encoded orthologs (red). Light red color indicates that the protein is encoded in both mitochondrial and nuclear genomes. White color indicates an orthologous protein is either absent or cannot be identified. For species with names shown in red, only mitochondrial proteomes are used; the species with names shown in pink, the mitochondrial proteomes are incomplete. Protein names and abbreviations: NADH dehydrogenase subunits 1–11, 4L (NAD[1-11], 4L), succinate dehydrogenase subunits 2–4 (SDH[2-4]), cytochrome-c oxidase subunits 1–3 (COX[1-3]), cytochrome b (COB), ATP synthase subunits 1, 3, 4, 6, 8, 9 (ATP[1, 3, 4, 6, 8-9]), ribosomal protein small subunits 1–4, 7, 8, 10–14, 16, 19, VAR1 (RPS[1-4, 7, 8, 10-14, 16, 19], VAR1), ribosomal protein large subunits 1, 2, 5, 6, 10, 11, 14, 16, 18, 19, 20, 27, 31, 32, 34, 35, 36 (RPL[1, 2, 5, 6, 10, 11, 14, 16, 18-20, 27, 31, 32, 34, 35, 36]), elongation factor EF-Tu (EF-Tu).