Fig. 5

Functional classification of the mock metagenomes. Percentage of reads classified to KEGG functions (bars) and number of KEGG functions (lines) provided by the different functional assignment methods, for the different sizes of the mock metagenomes. The data labelled as “mock” correspond to the annotations of the reads based on the original annotations of the genomes. The data corresponding to “metagenome” correspond to the total number of functions in all the genomes used to build the mock communities