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. Author manuscript; available in PMC: 2016 Feb 1.
Published in final edited form as: Biotechnol Bioeng. 2015 Sep 4;113(2):453–456. doi: 10.1002/bit.25720

Figure 3.

Figure 3

The effect of electrochemical reduction on enzymatic activity Enzymatic activity in the absence and presence of maltose was measured using the colorimetric β-lactamase substrate nitrocefin by monitoring the absorbance at 486 nm as a function of time. The catalytic activity of RG13-AA (A) before and (B) after electrochemical reduction did not differ significantly. In contrast, the catalytic activity of RG13-AND2 (C) before and (D) after electrochemical reduction showed that electrochemical reduction enabled maltose-activation of catalytic activity.