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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<sup>+</sup> oxidoreductase. This enzyme catalyses the following chemical reaction:

4'-apo-beta, psi-caroten-4'-al + NAD<sup>+</sup> + H2O neurosporaxanthin + NADH + 2 H<sup>+</sup>

Neurosporaxanthin is responsible for the orange color of Neurospora.

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