Beta-apo-4'-carotenal oxygenase

Beta-apo-4'-carotenal oxygenase (, beta-apo-4'-carotenal dehydrogenase, YLO-1, carD (gene)) is an enzyme with systematic name 4'-apo-beta,psi-carotenal:NAD+ oxidoreductase. This enzyme catalyses the following chemical reaction:


 * 4'-apo-beta, psi-caroten-4'-al + NAD+ + H2O $$\rightleftharpoons$$ neurosporaxanthin + NADH + 2 H+

Neurosporaxanthin is responsible for the orange color of Neurospora.