Heavy metal efflux pumps are more abundant in NDFO cultures. Normalized peptide counts of Dtpsy_1460, Dtpsy_1461, and Dtpsy_1462 in NDFO and organotrophic cultures at 8, 18, 24, 36, and 48 h. (Top row) Box plots showing the lower extreme, lower quartile, median, upper quartile, and upper extreme of normalized peptide counts. Data from the time courses were pooled from trypsin-shaving proteomic experiments. Data are overlaid on the box plots. (Bottom row) Normalized peptide count data at 8, 18, 24, 36, and 48 h in NDFO and organotrophic cultures.