Enzyme Substrate/Fuel Natural/Artificial electron acceptor Co-factor Half-cell reaction Reference Glucose oxidase Glucose O2 FAD Glucose → Glucono-1,5lactone+2H++2e- [226-228] Glucose dehydrogenase Glucose NAD NAD Glucose → Glucono-1,5lactone+2H++2e- [227] Glucose dehydrogenase Glucose Quinone PQQ Glucose → Glucono-1,5lactone+2H++2e- [227] Cellobiose dehydrogenase Glucose FAD Heme Glucose → Glucono-1,5lactone+2H++2e- [229-232]   Cellobiose FAD Heme Cellobiose → Cellobiono-1,5lactone+2H++2e- [233] Fructose dehydrogenase Fructose FAD Heme Fructose → 5-dehydrofructose+2H++2e- [234-235 Succinate dehydrogenase Succinate FAD Fe-S Succinate → Fumarate+2H++2e- [236] Alcohol dehydrogenase Ethanol PQQ Heme Ethanol → Acetaldehyde+2H++2e- [237] Oxalate oxidase Glycerol O2 FAD,Mn Oxalate → 2CO2+2H++2e- [227] Pyruvate dehydrogenase Pyruvate NAD NAD Pyruvate+SCoA→acetylCoA+2H++2e- [227] Hydrogenase Hydrogen   Fe-S H2→2H++2e- [238] Membrane-bound hydrogenase Hydrogen   Fe-S H2→2H++2e- [239]

Table 1: Some of the most studied enzymes for anodic oxidation and their respective reactions.