Comparison of the pentose phosphate pathway in an uninfected Escherichia coli cell and a MS2 phage-infected Escherichia coli cell. Relative to uninfected cells, all the reactions involved in the pentose phosphate pathway were upregulated during infection. (A) Schematic representation of the pentose phosphate pathway. Words in red represent metabolites. Rectangular boxes represent reactions, the key for which is provided in the Table 2. The numbers in the circle represent the flux values of the corresponding reactions in uninfected cell (top value) and infected cell (bottom value). (B) Quantitative representation of variation in the uninfected and infected cell fluxes of the pentose phosphate pathway. Key to the x-axis labels is given in the Table 2.