glutamine

noun
glu·​ta·​mine | \ ˈglü-tə-ˌmēn How to pronounce glutamine (audio) \

Definition of glutamine

: a crystalline amino acid C5H10N2O3 that is found both free and in proteins in plants and animals and that yields glutamic acid and ammonia on hydrolysis

Examples of glutamine in a Sentence

Recent Examples on the Web This is a substitution of lysine for glutamine at position 452 (L452Q). William A. Haseltine, Forbes, 22 Apr. 2022 Your gut has a hearty appetite for the amino acid glutamine. Patrick Wilson, Outside Online, 2 Nov. 2020 The glutamic acid is substituted by the polar uncharged amino acid glutamine (E484Q). William A. Haseltine, Forbes, 12 Apr. 2021 In some lineages the mutation was Q677P, where the 677th amino acid of the spike protein changed from glutamine (Q) to proline (P). New York Times, 15 Feb. 2021 Crystals formed after heating an ethanol-and-water solution containing L-glutamine and beta-alanine. Andrea Gawrylewski, Scientific American, 15 Oct. 2020 Starting in the 1950s, researchers tried to turn tumors’ glutamine dependence against them, developing drugs to block its metabolism. Mitch Leslie, Science | AAAS, 7 Nov. 2019 Consuming collagen is a particularly great way to get more conditional amino acids, like arginine, glutamine, glycine and proline. Better Health Market, Detroit Free Press, 30 July 2019 That’s got your biotin, your collagen, your glutamine, your niacinamide. Roxanne Adamiyatt, Town & Country, 23 Feb. 2019 See More

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

First Known Use of glutamine

circa 1885, in the meaning defined above

History and Etymology for glutamine

International Scientific Vocabulary gluten + amine

Buying Guide

Our Reviews team has selected the best protein powders.

Learn More About glutamine

Time Traveler for glutamine

Time Traveler

The first known use of glutamine was circa 1885

See more words from the same year

Dictionary Entries Near glutamine

glutaminase

glutamine

glutaminic acid

See More Nearby Entries 

Statistics for glutamine

Last Updated

19 May 2022

Cite this Entry

“Glutamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glutamine. Accessed 26 Jun. 2022.

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

More Definitions for glutamine

glutamine

noun
glu·​ta·​mine | \ ˈglüt-ə-ˌmēn How to pronounce glutamine (audio) \

Medical Definition of glutamine

: a crystalline amino acid C5H10N2O3 that is found both free and in proteins in plants and animals and that yields glutamic acid and ammonia on hydrolysis abbreviation Gln

More from Merriam-Webster on glutamine

Britannica.com: Encyclopedia article about glutamine

WORD OF THE DAY

Test Your Vocabulary

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!