Activation and inhibition of yeast aldehyde dehydrogenase activity by pantethine and its metabolites.

D-Pantethine-related metabolites, such as taurine, D-pantetheine, coenzyme A and D-pantothenate, activated yeast aldehyde dehydrogenase in vitro. D-Pantethine and cysteamine hydrochloride, however, strongly inhibited the activity of this enzyme.