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 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, "Coronavirus Variants and Mutations," 15 Feb. 2021 Crystals formed after heating an ethanol-and-water solution containing L-glutamine and beta-alanine. Andrea Gawrylewski, Scientific American, "Luminous Zebra Fish Wins Contest for Microscopic Photography," 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, "Revamped cancer drug starves tumors in mice," 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, "The top 5 ways collagen can help your body run better," 30 July 2019 That’s got your biotin, your collagen, your glutamine, your niacinamide. Roxanne Adamiyatt, Town & Country, "What Does a Pre-Oscars Facial Really Entail?," 23 Feb. 2019 Cocktails include vitamin C, B12, magnesium, calcium, B5, glutamine, zinc, arginine, glutathione, or lysine. Amy Bartner, Indianapolis Star, "Hungover? This place on Mass Ave. will inject you with a remedy," 31 May 2018 However, the active ingredient in Endari—L-glutamine—is an old chemical that can be purchased over the counter, which could complicate Emmaus’s ability to obtain insurance coverage. Adam Feuerstein, Scientific American, "FDA Approves First Sickle Cell Drug in 20 Years," 7 July 2017 This is due to their high levels of amino acids, such as glutamine, says cosmetic chemist Ginger King. Sarah Kinonen, Allure, "8 Succulent-Infused Beauty Products to Keep You Hydrated All Summer Long," 1 May 2017

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.

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First Known Use of glutamine

circa 1885, in the meaning defined above

History and Etymology for glutamine

International Scientific Vocabulary gluten + amine

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Time Traveler for glutamine

Time Traveler

The first known use of glutamine was circa 1885

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Statistics for glutamine

Last Updated

24 Feb 2021

Cite this Entry

“Glutamine.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2021.

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More Definitions for glutamine


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

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