Table 1 Average base composition (%) of the 13 protein-coding genes in mt genomes of 250 fishes
From: Structure and variation of the mitochondrial genome of fishes
| Â | Total | 1st position | 2nd position | 3rd position | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | A | T | G | C | A | T | G | C | A | T | G | C | A | T | G | C |
H-strand coded | ||||||||||||||||
 ND1 | 25.0 | 28.3 | 15.5 | 31.3 | 23.8 | 20.8 | 26.3 | 29.1 | 17.1 | 41.7 | 11.6 | 29.7 | 33.8 | 22.4 | 8.5 | 35.3 |
 ND2 | 27.2 | 25.9 | 13.2 | 33.7 | 30.4 | 18.1 | 20.6 | 31.0 | 15.6 | 39.0 | 11.1 | 34.4 | 35.7 | 20.4 | 8.1 | 35.8 |
 COI | 24.7 | 29.7 | 18.4 | 27.2 | 24.9 | 22.0 | 30.9 | 22.2 | 18.1 | 40.5 | 15.0 | 26.3 | 30.8 | 26.7 | 9.3 | 33.2 |
 COII | 28.6 | 27.3 | 16.6 | 27.5 | 23.8 | 18.7 | 31.2 | 26.3 | 27.6 | 37.8 | 11.0 | 23.6 | 34.3 | 25.4 | 7.3 | 33.0 |
 ATP8 | 30.6 | 26.2 | 11.5 | 31.7 | 29.8 | 23.9 | 15.2 | 31.0 | 22.7 | 31.8 | 11.4 | 34.1 | 37.4 | 22.6 | 8.3 | 31.8 |
 ATP6 | 25.6 | 29.4 | 13.5 | 31.5 | 28.0 | 16.0 | 21.1 | 34.9 | 14.2 | 47.1 | 11.4 | 27.3 | 34.4 | 24.9 | 8.2 | 32.5 |
 COIII | 24.9 | 28.0 | 17.3 | 29.9 | 20.0 | 25.0 | 28.6 | 26.5 | 20.8 | 36.5 | 16.7 | 26.0 | 33.7 | 22.2 | 6.6 | 37.4 |
 ND3 | 22.3 | 31.0 | 15.5 | 31.3 | 19.1 | 24.4 | 25.2 | 31.3 | 15.7 | 44.9 | 12.6 | 26.8 | 32.2 | 23.0 | 8.8 | 36.0 |
 ND4L | 22.7 | 28.4 | 15.6 | 33.3 | 19.8 | 24.1 | 24.5 | 31.5 | 13.5 | 40.1 | 14.7 | 31.8 | 33.5 | 20.8 | 8.2 | 37.5 |
 ND4 | 26.6 | 27.7 | 15.0 | 30.8 | 28.8 | 20.1 | 21.0 | 30.1 | 16.1 | 41.1 | 15.0 | 27.9 | 34.8 | 21.7 | 9.1 | 34.4 |
 ND5 | 28.0 | 27.5 | 14.0 | 30.5 | 32.6 | 19.8 | 22.4 | 25.2 | 19.5 | 39.7 | 12.2 | 28.6 | 31.7 | 22.9 | 7.8 | 37.6 |
 Cyt b | 24.8 | 29.5 | 15.3 | 30.5 | 24.1 | 24.2 | 25.8 | 25.9 | 20.0 | 41.2 | 13.5 | 25.3 | 31.1 | 22.1 | 6.7 | 40.1 |
 Average | 25.9 | 28.2 | 15.1 | 30.8 | 25.4 | 21.4 | 24.4 | 28.8 | 18.4 | 40.1 | 13.0 | 28.5 | 33.6 | 22.9 | 8.1 | 35.4 |
L-strand coded | ||||||||||||||||
 ND6 | 15.4 | 37.8 | 32.8 | 14.0 | 12.8 | 32.0 | 42.8 | 12.4 | 12.0 | 44.1 | 23.1 | 20.9 | 21.3 | 37.1 | 32.3 | 9.4 |