IUBMB Enzyme Nomenclature


Accepted name: phenylacetaldehyde synthase

Reaction: L-phenylalanine + O2 + H2O = phenylacetaldehyde + CO2 + NH3 + H2O2

For diagram of reaction click here

Other name(s): PAAS (gene name)

Systematic name: L-phenylalanine carboxy-lyase (oxidative-deaminating)

Comments: A pyridoxal 5'-phosphate protein. The enzyme, isolated from the the plants Petunia hybrida and a Rosa hybrid, catalyses the production of phenylacetaldehyde directly from L-phenylalanine. The enzyme is specific for L-phenylalanine and does not accept other aromatic amino acids as substrates.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:


1. Kaminaga, Y., Schnepp, J., Peel, G., Kish, C.M., Ben-Nissan, G., Weiss, D., Orlova, I., Lavie, O., Rhodes, D., Wood, K., Porterfield, D.M., Cooper, A.J., Schloss, J.V., Pichersky, E., Vainstein, A. and Dudareva, N. Plant phenylacetaldehyde synthase is a bifunctional homotetrameric enzyme that catalyzes phenylalanine decarboxylation and oxidation. J. Biol. Chem. 281 (2006) 23357-23366. [PMID: 16766535]

[EC created 2017]

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