Assessment reveals localized redox processes in enzymes at abiotic interfaces, highlighting unique O2 conversion.
A deeper understanding of the intricate redox processes at biotic/abiotic interfaces requires advanced analytical tools. We present the localized and real-time characterization of a multicopper oxidase adsorbed on a gold electrode using a dedicated microbiosensor, providing detailed and spatially resolved information. Enzymatic O2 reduction is shown to proceed without detectable H2O2 accumulation. Instead, H2O2 originates from direct O2 conversion at the gold surface.
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Wang et al. (2025) studied this question.
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