Fig. 1.—

Variation in genomic GC content values in Lactobacillus and Bifidobacterium. The GC content at third codon synonymous sites (GC3s) is plotted against the overall genomic GC content (GC) for Lactobacillus (blue) and Bifidobacterium (red). The individual species are listed in supplementary table S1, Supplementary Material online, and their GC content at third codon synonymous sites in supplementary table S2, Supplementary Material online. Three species with a markedly deviating GC content, Gardnerella vaginalis, Lactobacillus fermentum and L. delbrueckii, are highlighted.