a primary alcohol + NAD(+) = an aldehyde + H(+) + NADH a secondary alcohol + NAD(+) = a ketone + H(+) + NADH Inhibited by 2,2,2-trifluoroethanol and pyrazole. Homodimer. Virtually all natural populations of this species are polymorphic for 2 electrophoretically distinguishable alleles, Adh-S and Adh-F (PubMed:6789320, PubMed:6410283, PubMed:1673107, PubMed:1683848, Ref.12, PubMed:12537569, Ref.18, PubMed:6821373, PubMed:6780981). The sequence of the Adh-S allele is shown (PubMed:6789320, PubMed:6410283, PubMed:1673107, Ref.12, PubMed:12537569, Ref.18, PubMed:6821373). Other naturally occurring alleles include Adh-JA-F, Adh-AF-S, Adh-F-CHD, Adh-71K, Adh-UF and Adh-F' (PubMed:3021568, PubMed:3137352, PubMed:2124644, PubMed:6789328, PubMed:115502, PubMed:6821373). Artificially induced mutations include Adh-NB, Adh-NLA248, Adh-N4 and Adh-N11 (PubMed:6818527, PubMed:3928896, PubMed:3108863, PubMed:6821373, PubMed:2419573). Belongs to the short-chain dehydrogenases/reductases (SDR) family.