Alpha-Ketoglutaric Semialdehyde (KGSA) Dehydrogenase (KGSADH, EC 1.2.1.26) catalyzes the NAD(P)+-dependent conversion of KGSA to alpha-ketoglutarate. This CD contains such sequences as those seen in Azospirillum brasilense, KGSADH-II (D-glucarate/D-galactarate-inducible) and KGSADH-III (hydroxy-L-proline-inducible). Both show similar high substrate specificity for KGSA and different coenzyme specificity; KGSADH-II is NAD+-dependent and KGSADH-III is NADP+-dependent. Also included in this CD is the NADP(+)-dependent aldehyde dehydrogenase from Vibrio harveyi which catalyzes the oxidation of long-chain aliphatic aldehydes to acids.