glutamine

American  

[gloo-tuh-meen, -min] / ˈglu təˌmin, -mɪn /

noun

Biochemistry.

1. a crystalline amino acid, HOOCCH(NH2 )CH 2 CH 2 CONH 2 , related to glutamic acid. Gln; Q

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glutamine British  

/ ˈɡluːtəˌmiːn, -mɪn /

noun

1. a nonessential amino acid occurring in proteins: plays an important role in protein metabolism

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glutamine Scientific  

/ glo̅o̅′tə-mēn′ /

1. A nonessential amino acid. Chemical formula: C ₅ H ₁₀ N ₂ O ₃ .

2. See more at amino acid

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Etymology

Origin of glutamine

First recorded in 1880–85; glut(en) + -amine

Example Sentences

See Examples For:

glutamine

Those which are particularly toxic to the liver when taken in high doses include vitamin A, glutamine, ashwagandha and green tea extract.

From BBC ● Jun. 20, 2026

However, some cells become especially reliant on glutamine, an amino acid that plays a major role in metabolism.

From Science Daily ● Apr. 20, 2026

A switch from glutamine to leucinein resulting from just one mutation could switch the virus from being able to easily bind to avian, or bird, receptors to favouring human receptors in the respiratory tract.

From Salon ● Apr. 30, 2025

And the glutamine substitution, together with another mutation in the same virus at position 190, could have the same effect as the 226L.

From Science Magazine ● Dec. 5, 2024

Lo and behold, when they switched a glutamine to a leucine at position 226, it no longer bound to the bird receptors, but instead exclusively to those of humans.

From Los Angeles Times ● Dec. 5, 2024