β-Phenyl-L-alanine As a protein amino acid it is found in all plants. Essential dietary amino acid. It has been used to treat depression. Normally, it is metabolised to tyrosine, except in children with phenylketonuria, in which an enzyme is...

Phe redirects here. For the BitTorrent feature, see PHE. For the constellation, see Phoenix (constellation). Phenylalanine (abbreviated as Phe or F)[1] is an α-amino acid with the formula HO2CCH(NH2)CH2C6H5. This essential amino acid is classified as...