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valine Syllabification: val·ine
Pronunciation: /ˈvaˌlēn/

Definition of valine in English:


An amino acid that is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.
  • Chemical formula: (CH3)2CHCH(NH2)COOH
Example sentences
  • In sickle cell disease, the amino acid valine is substituted for glutamic acid in the beta-hemoglobin chain of hemoglobin.
  • When synthetic lysine is used in the lactation diet, care should be taken to ensure that methionine, valine, and threonine are not limiting.
  • Sickle cell anemia is caused by the replacement of glutamate by valine at the sixth position of the [beta] globin chain.


Early 20th century: from val(eric acid) + -ine4.

Definition of valine in:
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