Fig. 2
From: Pre- and post-sequencing recommendations for functional annotation of human fecal metagenomes

a True positive rates and b false positive rates of detection of beta-galactosidase sequences in simulated metagenomes containing 2500 beta-galactosidase sequences at varying e-value cutoffs and read lengths of 50 bp (light blue), 100 bp (purple), 150 bp (salmon), 200 bp (blue), and 250 bp (navy). c True positive rates and d false positive rates of detection of Homoserine O-acetyltransferase sequences in simulated metagenomes containing 350 Homoserine O-acetyltransferase at varying e-value cutoffs and read lengths of 50 bp (light blue), 100 bp (purple), 150 bp (salmon), 200 bp (blue), and 250 bp (navy)