Fig. 5From: Resource constrained flux balance analysis predicts selective pressure on the global structure of metabolic networksSchematic graphical representation of the E. coli core metabolism. The network contains 72 metabolites and 95 reactions, including pseudo reactions [29]. Some important metabolites are named explicitly. Ex_ac, Ex_pyr, Ex_mal-L, Ex_glu-L and Ex_glc represent the extracellular concentrations of Acetate, Pyruvate, L-malate, L-glutamate and D-glucose, respectively, that are provided in random order to mimic fluctuations in nutrient availabilityBack to article page