Meaning & use
phenylalanine
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An essential amino acid that the body cannot produce on its own and must obtain from food, used to build proteins and neurotransmitters.
See it in a sentence
People with the genetic disorder PKU must strictly limit their intake of phenylalanine.
Phenylalanine is found in high-protein foods like meat, eggs, and dairy.
A note on using this word
Products containing aspartame, an artificial sweetener, carry warning labels for people with phenylketonuria (PKU) because aspartame breaks down into phenylalanine.
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