proline
noun
pro·line ˈprō-ˌlēn 
: an amino acid C5H9NO2 that can be synthesized by animals from glutamate
Example Sentences
Recent Examples on the Web These proteins rich in proline, however, do not have the key repetitive protein structures that help mucins bind to sugar molecules. 
Omer Gokcumen, The Conversation, 26 Aug. 2022 The most prevalent mutation in this T cell epitope is an amino acid substitution of proline for leucine, denoted as YLQLRTFLL or P272L mutation. William A. Haseltine, Forbes, 17 Aug. 2022 The third mutant in S1, the substitution of proline for arginine (P681R), is located near the cleavage site between S1 and S2. William A. Haseltine, Forbes, 12 Apr. 2021 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 See More
Omer Gokcumen, The Conversation, 26 Aug. 2022 The most prevalent mutation in this T cell epitope is an amino acid substitution of proline for leucine, denoted as YLQLRTFLL or P272L mutation. William A. Haseltine, Forbes, 17 Aug. 2022 The third mutant in S1, the substitution of proline for arginine (P681R), is located near the cleavage site between S1 and S2. William A. Haseltine, Forbes, 12 Apr. 2021 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 Likely, a skin improvement is due to additional ingredients in your topical cream or simply additional proline, an amino acid found in collagen. Brooke Russell, Quartzy, 5 Oct. 2019 See More Word History
Etymology
German Prolin, contraction of Pyrrolidin pyrrolidine (C4H9N), from International Scientific Vocabulary pyrrole + -idine
First Known Use
1904, in the meaning defined above
Medical Definition
proline
noun
pro·line ˈprō-ˌlēn
: an amino acid C5H9NO2 that can be synthesized by animals from glutamate —abbreviation Pro