Could be indirectly involved in cadmium-detoxification, by lowering the intracellular concentrations of aldehydes. an aldehyde + H2O + NAD(+) = a carboxylate + 2 H(+) + NADH Alcohol metabolism; ethanol degradation; acetate from ethanol: step 2/2. By cadmium. Belongs to the aldehyde dehydrogenase family.