An amino acid that is a constituent of most proteins, especially collagen.
- A heterocyclic compound; chemical formula: C5H9NO2.
- Active oxygen species cause protein damage through direct interaction with specific amino acids (lysine, arginine, proline or threonine).
- The amount of the amino acids threonine, proline and histidine were also increased in roots of slag-cultivated maize plants.
- The cationic component of the hemolymph is frequently replaced by potassium and free amino acids such as glutamate, proline, lysine and glycine.
Early 20th century: contraction of the chemical name p(yr)rol(id)ine-2-carboxylic acid.
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