Correspondence analysis of codon usage among three <i>Alteromonas</i> species genomes.

Eleven types of codon use are shown for Alteromonas strains SN2, AltDE, and ATCC 27126 Abbreviations: T3,C3,A3 and G3 indicate the frequencies of bases at position 3 of each codon. GC, GC content in coding genes (G+C) GC3s, GC of silent 3rd codon position Fop, frequency of optimal codon index CBI, codon bias index CAI, codon adaptation index L_sym, number of synonymous codons L_nsym, number of non-synonymous codons