Table 2. Comparison between mitochondria-encoded genes and mitochondria-derived nuclear genes in terms of the evolutionary rate and composition bias.
| Mitochondria-encoded genes | Mitochondria-derived nuclear genes | ||
|---|---|---|---|
| Functional categories | Energy production and conversion | cob, cox2, cox3, nad1, nad2, nad3, nad4, nad4L, nad5, nad6, nad9 | cox11, sdhB, sucD, petA, erpA, hesB, ybjS, nuoC, nuoD, nuoF, nuoG, nuoI |
| Translation and posttranslational modification | rpl2, rpl5, rpl6, rpl16, rps1, rps2, rps3, rps4, rps7, rps8, rps11, rps12, rps13, rps14, rps19 | rpl3, grpE, groEL, dnaK, clpB, clpP, hslV, engA, gidA, trmE | |
| Others | AFG1, apaG, bioC, hemN, ksgA, mraW, hypothetical | ||
| Mitochondrial/Nuclear average evolutionary rate (substitution/site) * | 1.713 (stdev 0.225) | 1.273 (stdev 0.088) | |
| Mitochondrial/Nuclear average aminoGC content ** | 0.152 (stdev 0.017) | 0.215 (stdev 0.004) | |
| Mitochondrial/Nuclear average compositional chi-square scores * | 662.4 (stdev 394.3) | 89.6 (stdev 41.4) | |
*T-test P < 0.01 ** T-test P < 0.001.