Heatmaps of metabolic pathways of special interest. The log2 fold changes of annotated proteins are visualized ranging from blue (low abundance) to red (high abundance). A detailed annotation of the protein names can be found in the Additional file 1. One line of the heatmap represents the different subpopulations (C1, C2 and Cx) at different growth rates (μ = 0.1 h−1, μ = 0.7 h−1). Proteins of the specific pathways are shown column-wise.