- an alcohol-soluble amino acid, C4H9NHCOOH, occurring in high concentration in collagen. Abbreviation: Pro; Symbol: P
Origin of proline
First recorded in 1900–05; alteration of pyrrolidine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a nonessential amino acid that occurs in protein
C20: from pyrrolidine
- An amino acid that is found in most proteins and is a major constituent of collagen.
- A nonessential amino acid. Chemical formula: C5H9NO2. See more at amino acid.