Phenylacetaldehyde dehydrogenase

In enzymology, phenylacetaldehyde dehydrogenase is an enzyme that catalyzes the chemical reaction
The three substrates of this enzyme are phenylacetaldehyde, oxidised nicotinamide adenine dinucleotide, and water. Its products are phenylacetic acid, reduced NADH, and a proton.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is phenylacetaldehyde:NAD+ oxidoreductase. This enzyme participates in phenylalanine metabolism and styrene degradation.