Figure 4. Heat map profiles of metabolite peak intensities in A. baumannii.

Left: paired strains of ATCC 19606 and polymyxin-resistant 19606R, Right: paired clinical isolates polymyxin-susceptible 03–149.1 and polymyxin-resistant 03–149.2. Metabolites are grouped into different classes: amino acids, carbohydrates, energy, lipids, nucleotides, peptides and undefined. Metabolites derived from the footprint (fp) also represented in the heat map. The colors indicate the relative abundance of metabolites based on the relative peak intensity (red = high, yellow = no change, blue = undetectable).