Definition of phenylalanine in English:

phenylalanine

Syllabification: phen·yl·al·a·nine
Pronunciation: /ˌfenəlˈaləˌnēn, ˌfēnəl-
 
/

noun

Biochemistry
  • An amino acid widely distributed in plant proteins. It is an essential nutrient in the diet of vertebrates.
    • Chemical formula: C6H5CH2CH(NH2)COOH
    More example sentences
    • Trypsin favors basic residues like lysine and arginine; chymotrypsin favors aromatic residues like phenylalanine, tyrosine, and tryptophan.
    • Like its amino-acid sister phenylalanine, tyrosine is a key nutrient that your body can use to restock NE stores depleted by ephedrine.
    • The amino acids tyrosine and phenylalanine are the building materials for catecholamines, which are used as source material for both neurotransmitters and for hormones.

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a slit made by cutting with a saw