Table 4.
Compositional features of tunicate mitochondrial genomes
| G+C% | T/G ratio | %T | %G | %A | %C | GC-skew | AT-skew | |||||||||
| Alla | P3b | All | P3 | All | P3 | All | P3 | All | P3 | All | P3 | All | P3 | All | P3 | |
| Ascidiacea | ||||||||||||||||
| Phallusia mammillata | 47.1 | 50.7 | 1.18 | 1.12 | 33.3 | 32.1 | 28.2 | 28.6 | 19.5 | 17.2 | 18.9 | 22.1 | 0.20 | 0.13 | -0.26 | -0.30 |
| Phallusia fumigata | 46.8 | 52.2 | 1.07 | 0.86 | 33.3 | 30.7 | 31.1 | 35.5 | 19.9 | 17.1 | 15.7 | 16.7 | 0.33 | 0.36 | -0.25 | -0.29 |
| Ciona intestinalis sp. A | 21.4 | 10.5 | 3.72 | 8.18 | 44.4 | 49.3 | 11.9 | 6.0 | 34.2 | 40.2 | 9.5 | 4.4 | 0.12 | 0.15 | -0.13 | -0.10 |
| Ciona intestinalis sp. B | 23.5 | 15.5 | 3.47 | 5.95 | 43.5 | 46.9 | 12.5 | 7.9 | 33.1 | 37.6 | 10.9 | 7.7 | 0.07 | 0.01 | -0.14 | -0.11 |
| Ciona savignyi | 22.7 | 13.0 | 3.22 | 4.99 | 45.3 | 51.9 | 14.1 | 10.4 | 32.0 | 35.2 | 8.7 | 2.6 | 0.24 | 0.61 | -0.17 | -0.19 |
| Halocynthia roretzi | 31.7 | 24.1 | 1.90 | 2.38 | 44.0 | 50.0 | 23.2 | 21.0 | 24.3 | 26.0 | 8.5 | 3.1 | 0.46 | 0.74 | -0.29 | -0.32 |
| Thaliacea | ||||||||||||||||
| Doliolum nationalis | 39.0 | 39.4 | 1.64 | 1.74 | 32.8 | 30.9 | 20.0 | 17.8 | 28.3 | 29.7 | 19.0 | 21.7 | 0.03 | -0.10 | -0.07 | -0.02 |
a All: whole mitochondrial genome.
b P3: third codon position of the 13 protein-coding genes.