1.1.2.8 butanol + 2 cytochrome c - 1.1.2.8 diethylstilbestrol + pyrroloquinoline quinone i.e. 4,4'-(3E)-hex-3-ene-3,4-diyldiphenol 1.1.2.8 ethanol + 2 cytochrome c - 1.1.2.8 ethanol + 2 ferricytochrome c - 1.1.2.8 methanol + 2 cytochrome c - 1.1.2.8 additional information ExaF is functionally an ethanol dehydrogenase, with secondary activities with formaldehyde, methanol, and acetaldehyde. Enzyme assays are performed with with the artificial electron acceptors phenazine methosulfate and 2,6-dichlorophenolindophenol. Methanol-independent reduction of the latter is not observed with purified enzyme