phenylalanine(redirected from l-, d-phenylalanine)
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An essential amino acid, C9H11NO2, that occurs as a constituent of many proteins and is converted to tyrosine in the body.
phenylalanine(ˌfiːnaɪlˈæləˌniːn; ˌfɛnɪl-) or
(Elements & Compounds) an aromatic essential amino acid; a component of proteins
phen•yl•al•a•nine(ˌfɛn lˈæl əˌnin, -nɪn, ˌfin-)
a crystalline, water-soluble, essential amino acid, C6H5CH2CH(NH2)COOH, necessary to the nutrition of humans and most animals, occurring in egg white and skim milk. Abbr.: Phe; Symbol: F
An essential amino acid. See more at amino acid.
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|Noun||1.||phenylalanine - an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body|
essential amino acid - an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet