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. 2014 Aug 15;9(8):e105292. doi: 10.1371/journal.pone.0105292

Figure 4. Homeostasis of ATP and NADPH in Synechococcus 7942 cells under changing CO2 conditions.

Figure 4

The upper left corner shows the match between the simulated (black line) and experimental values (solid square) of the ATP · (ADP+ATP)−1 ratio at both high and low CO2. The lower left section indicates the NADPH · (NADPH+NADP+)−1 ratio: grey circle for low CO2; grey asterisk for high CO2, grey dotted line for simulation in low CO2, with neglecting NAD co-regulation in the reaction catalyzed by GAPs, grey line for simulation in low CO2 with NAD replaced by NADPH in a reaction catalyzed by GAPs. The right section shows the measured and simulated ratio of ATP/NADPH production.