Nicotinate dehydrogenase (cytochrome)

Nicotinate dehydrogenase (cytochrome) (, nicotinic acid hydroxylase, nicotinate hydroxylase) is an enzyme with systematic name nicotinate:cytochrome 6-oxidoreductase (hydroxylating). This enzyme catalyses the following chemical reaction



nicotinate + a ferricytochrome + H2O $$\rightleftharpoons$$ 6-hydroxynicotinate + a ferrocytochrome + 2 H+

This two-component enzyme from Pseudomonas belongs to the family of xanthine dehydrogenases.