Figure 4. Abundance ubiquity plot of phage genomes in public metagenomes.

Reads from 2,944 publicly available shotgun metagenomes49 were aligned to a database of 1,193 phage genomes (see Methods). The average depth of aligned reads per nucleotide of the phage genome (abundance) is plotted against the number of metagenomes it is found in (ubiquity). See Supplementary Data 5 for details.