Succinate-semialdehyde dehydrogenase (NADP<sup>+</sup>) (, succinic semialdehyde dehydrogenase (NADP<sup>+</sup>), succinyl semialdehyde dehydrogenase (NADP<sup>+</sup>), succinate semialdehyde:NADP<sup>+</sup> oxidoreductase, NADP-dependent succinate-semialdehyde dehydrogenase, GabD) is an enzyme with systematic name succinate-semialdehyde:NADP<sup>+</sup> oxidoreductase. This enzyme catalyses the following chemical reaction
This enzyme participates in the degradation of glutamate and 4-aminobutyrate.