proline

An amino acid, C₅H₉NO₂, that is found in most proteins and is a major constituent of collagen.

Pyrrolidine carboxylic acid, C₄H₈N.CO₂H, a compound formed by the hydrolysis of the glycylanhydrid obtained bv the tryptic digestion of gelatin. The active a-proline melts at 205° C.

A nonessential amino acid C5H9NO2 found in most animal proteins, especially collagen; its cyclic structure leads to kinks in the peptide chain of proteins.

an amino acid that is found in many proteins (especially collagen)