Galactose 1-dehydrogenase (NADP+)

In enzymology, a galactose 1-dehydrogenase (NADP⁺) () is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are D-galactose (shown in its aldehydo form) and oxidised nicotinamide adenine dinucleotide phosphate (NADP⁺). Its products are -galactono-1,5-lactone, reduced NADPH, and a proton.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD⁺ or NADP⁺ as acceptor. The systematic name of this enzyme class is D-galactose:NADP⁺ 1-oxidoreductase. Other names in common use include D-galactose dehydrogenase (NADP⁺), and galactose 1-dehydrogenase (NADP⁺). This enzyme participates in galactose metabolism.

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