phenylalanine /phen·yl·al·a·nine/ (Phe) (F) (-al´ah-nēn) an aromatic essential amino acid necessary for optimal growth in infants and for nitrogen equilibrium in human adults.
Phenylalanine
phenylalanine (Phe) 
phenylalanine (fen´ilal´
nēn),
phen·yl·al·a·nine (f n  l- l -n n, fnl-)n. Abbr. Phe An essential amino acid that occurs as a constituent of many proteins and is normally converted to tyrosine in the body. |
Phenylalanine
An essential amino acid that must be obtained from food since the human body cannot manufacture it.
Mentioned in: Phenylketonuria
phenylalanine (Phe)
[fen′ilal′ənēn]
an essential amino acid necessary for the normal growth and development of infants and children and for normal protein metabolism throughout life. The normal value of this amino acid in serum is less than 3 mg/dL in adults and 1.2 to 3.5 mg/dL in newborns. It is abundant in milk, eggs, and other common foods. See also amino acid, phenylketonuria, protein.
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Chemical structure of phenylalanine
phenylalanine (fen´ilal´
nēn),n one of the essential amino acids. See also amino acid.
phenylalanine
a naturally occurring amino acid essential for optimal growth in young animals and for nitrogen equilibrium in adults.
phenylalanine deaminase test
a biochemical test used for the identification of enterobacteria, based on the formation of phenylpyruvic acid.
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