an aldehyde + H2O + NAD(+) = a carboxylate + 2 H(+) + NADH Belongs to the aldehyde dehydrogenase family. Was originally described as an NAD(+)-dependent alcohol dehydrogenase (ADH) (PubMed:9660191). However, BLAST alignments indicate that this fragment represents the N-terminal sequence of an aldehyde dehydrogenase. The protein characterized in this article does not correspond to the sequenced fragment but to the alcohol dehydrogenase as shown in the UniProtKB AC Q8GIX7 entry.