noun.
An amino acid, C5H9NO2, that is found in most proteins and is a major constituent of collagen.
The Century Dictionary and Cyclopedia
noun.
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.
noun.
A nonessential amino acid C5H9NO2 found in most animalproteins, especially collagen; its cyclicstructure leads to kinks in the peptide chain of proteins.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
an amino acid that is found in many proteins (especially collagen)
Word Usage
"She said it was already known the gene made a protein called proline rich transmembrane protein 2."