Figure 3.

Amino acid composition of the 13 protein-coding genes in Rhabdopleura compacta compared to closely related deuterostome species: the enteropneusts Balanoglossus carnosus and Saccoglossus kowalevskii, the sea urchin Paracentrotus lividus and the brittle star Ophiocomina nigra. Amino acids solely encoded by GT or AC rich codons are indicated by white letters. These codons are listed on the left and are identical for all mtDNAs of Deuterostomia.

Perseke et al. BMC Evolutionary Biology 2011 11:134   doi:10.1186/1471-2148-11-134
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