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Phenylalanine

//ˌfiːnəlˈæləniːn// noun

Definitions

Noun
  1. 1
    An essential amino acid C₉H₁₁NO₂ found in most animal proteins; it is essential for growth; the inability to metabolize it leads to phenylketonuria; it is a constituent of aspartame. countable, uncountable
  2. 2
    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 wordnet
  3. 3
    This molecule or its D-isomer. countable, uncountable

Etymology

From phenyl + alanine.

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