proline

noun
pro·​line | \ ˈprō-ˌlēn How to pronounce proline (audio) \

Definition of proline

: an amino acid C5H9NO2 that can be synthesized by animals from glutamate

Examples of proline in a Sentence

Recent Examples on the Web 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 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 The supplements specifically contain high amounts of three amino acids that are key building blocks for collagen synthesis in the body: glycine, proline and hydroxyproline. Lisa Drayer, CNN, 17 Oct. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'proline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of proline

1904, in the meaning defined above

History and Etymology for proline

German Prolin, contraction of Pyrrolidin pyrrolidine (C4H9N), from International Scientific Vocabulary pyrrole + -idine

Learn More About proline

Time Traveler for proline

Time Traveler

The first known use of proline was in 1904

See more words from the same year

Dictionary Entries Near proline

proligerous

proline

prolix

See More Nearby Entries 

Statistics for proline

Cite this Entry

“Proline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proline. Accessed 16 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for proline

proline

noun
pro·​line | \ ˈprō-ˌlēn How to pronounce proline (audio) \

Medical Definition of proline

: 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

WORD OF THE DAY

Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!