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Table 3 Nucleotide composition and AT- and GC-skews of the mitochondrial protein-encoding and ribosomal RNA genes and the entire Flustra foliacea genome.

From: The complete mitochondrial genome of Flustra foliacea (Ectoprocta, Cheilostomata) - compositional bias affects phylogenetic analyses of lophotrochozoan relationships

Gene Proportion of nucleotides AT% AT skew GC skew
  A G C T    
atp6 0.213 0.225 0.123 0.439 65.2 -0.347 0.293
atp8 0.306 0.189 0.099 0.405 71.1 -0.139 0.313
cox1 0.227 0.219 0.135 0.419 64.6 -0.297 0.237
cox2 0.225 0.237 0.124 0.414 63.9 -0.296 0.313
cox3 0.196 0.266 0.110 0.426 62.2 -0.370 0.415
cob 0.225 0.214 0.130 0.430 65.5 -0.313 0.244
nad1 0.226 0.217 0.103 0.454 68.0 -0.335 0.356
nad2 0.246 0.217 0.104 0.434 68.0 -0.276 0.352
nad3 0.177 0.234 0.105 0.484 66.1 -0.464 0.381
nad4 0.214 0.219 0.106 0.462 67.6 -0.367 0.348
nad4L 0.212 0.242 0.072 0.474 68.6 -0.382 0.541
nad5 0.217 0.222 0.116 0.445 66.2 -0.344 0.314
nad6 0.187 0.224 0.085 0.503 69.0 -0.458 0.450
rrnS 0.336 0.215 0.142 0.306 64.2 0.047 0.204
rrnL 0.357 0.197 0.115 0.331 68.8 0.038 0.263
Entire genome 0.248 0.222 0.114 0.417 66.5 -0.254 0.321
Protein coding sequences 0.219 0.224 0.114 0.442 66.1 -0.337 0.325
1st codon position 0.27 0.257 0.117 0.358 62.8 -0.140 0.374
2nd codon position 0.169 0.183 0.186 0.462 63.1 -0.464 -0.008
3rd codon position 0.218 0.233 0.042 0.506 72.4 -0.398 0.695
  1. AT skew = (A%-T%)/(A%+T%); GC skew = (G%-C%)/(C%+G%)