Claim: Phenylacetaldehyde dehydrogenase (participates in phenylalanine metabolism) in the family of oxidoreductases, is an enzyme that catalyzes the chemical reaction and it has 2 substrates.
Evidence: The 3 substrates of this enzyme are phenylacetaldehyde, NAD, and H2O, whereas its 3 products are phenylacetate, NADH, and H.