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. Author manuscript; available in PMC: 2016 May 26.
Published in final edited form as: Angew Chem Int Ed Engl. 2015 Apr 9;54(22):6562–6566. doi: 10.1002/anie.201411148

Figure 3.

Figure 3

A-B) Electric potentials generated on the PQQ-modified electrode interfaced with the biocatalytic systems shown in Figures 2A and 2B, respectively, when different combinations of input signals were applied. The bars show the potential values achieved after 30 min of exposing the PQQ-modified electrode to the enzyme systems. The data are average of three independent experiments. The potential produced on the PQQ-modified electrode has a logarithmic dependence on the NADH concentration (according to the Nernst equation), thus resulting in very small variations of the measured potentials. Threshold lines separate logic output 0, undefined area and logic output 1.