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Word of the Day Wednesday, June 10, 2026

proline

/ˈproʊlaɪn/ noun · British & US
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What does proline mean?

noun

A nonpolar, aliphatic, and imino-containing amino acid, C5H9NO, that is one of the 20 amino acids found in proteins. It is a secondary amino acid, meaning that its side chain is attached to the alpha carbon atom.

Example

"The protein's structure was stabilized by the presence of proline residues."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for proline

Rhymes with proline

Etymologically related