May act on the acetaldehyde produced from the degradation of ethanolamine, producing ethanol (By similarity). Active on acetaldehyde and isobutyraldehyde in vitro. In vitro works equally well with NADH or NADPH (PubMed:22731523). ethanol + NAD(+) = acetaldehyde + H(+) + NADH Amine and polyamine degradation; ethanolamine degradation. Belongs to the iron-containing alcohol dehydrogenase family. In strain MG1655 the eut operon is interrupted by the CPZ-55 prophage, encoding 9 genes situated between eutA and eutB, which are translated in the other direction. CPZ-55 may prevent expression of the eut operon in strain MG1655. Strain W3110 does not have this prophage element and should be able to express the operon.