FIG 3 .
Taxonomic classification of predicted steroid degradation proteins. Shown are class-, phylum-, or domain-level assignments of predicted steroid degradation proteins in 105 analyzed metagenomes. “Other bacterial phyla” includes all phyla assigned to less than 1% of the proteins. Metagenomes are labeled using a three-letter code representing the global environment and a unique metagenome number (see Table S1A for details).