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: an amino acid C5H9NO2 that can be synthesized by animals from glutamate
Examples of proline in a Sentence
Recent Examples on the Web
Research suggests bone broth may be lower in , glycine, and proline (primary amino acids) than collagen supplements.8
8 Science-Backed Collagen Benefits
4.
—Jonathan Purtell, Verywell Health, 9 Oct. 2024
Meanwhile Atlantic sea kelp, proline, and botanical oils help boost collagen production and to ensure skin is more moisturized after each use.
—Kiana Murden, Vogue, 15 Aug. 2024
Key Ingredients: Atlantic sea kelp, proline, salicylic acid.
—Kiana Murden, Vogue, 14 June 2024
Collagen is a protein made by the body from the essential amino acids proline and glycine with an assist from copper, zinc and vitamin C.
One-third of the body’s protein is collagen.
—Sheah Rarback, Miami Herald, 24 Feb. 2024
The foods richest in collagen come from animals, but several fruits and vegetables are rich in vitamin C, amino acids proline and glycine, and minerals such as zinc and copper, all of which promote the synthesis of this essential protein.
—Alessandra Signorelli, Glamour, 24 Oct. 2023
The anti-inflammatory properties of collagen are due to its content of proline and glycine.
—Amber Smith, Discover Magazine, 23 Mar. 2022
Combining powerful amino acids such as glycine and proline, this product works to strengthen tendons, ligaments, bones, hair, skin, and nails.
—Amber Smith, Discover Magazine, 9 Jan. 2023
Repeats with a lot of proline, threonine and serine transform a typical protein to a mucin because of the polypeptide structure that is formed.
—Coren Walters-Stewart, Discover Magazine, 18 Oct. 2022
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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
Dictionary Entries Near proline
Cite this Entry
“Proline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proline. Accessed 21 Dec. 2024.
Medical Definition
proline
noun
pro·line
ˈprō-ˌlēn
: an amino acid C5H9NO2 that can be synthesized by animals from glutamate
—abbreviation Pro
More from Merriam-Webster on proline
Britannica.com: Encyclopedia article about proline
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