glutamine

/glooh"teuh meen', -min/, n. Biochem.
a crystalline amino acid, HOOCCH(NH2)CH2CH2CONH2, related to glutamic acid. Abbr.: Gln; Symbol: Q
[1880-85; GLUT(EN) + -AMINE]

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One of the nonessential amino acids, closely related to glutamic acid.

It is especially important in the cellular metabolism of animals as the only amino acid capable of readily crossing the blood-brain barrier. It is used in medicine and biochemical research and as a feed additive.

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      an amino acid, the monoamide of glutamic acid, and an abundant constituent of proteins. First isolated from gliadin, a protein present in wheat (1932), glutamine is widely distributed in plants; e.g., beets, carrots, and radishes. Important in cellular metabolism in animals, glutamine is the only amino acid capable of readily crossing the barrier between blood and brain and, with glutamic acid, is thought to account for about 80 percent of the amino nitrogen (−NH2) of brain tissue. It is one of several so-called nonessential amino acids; i.e., animals can synthesize it from glutamic acid and do not require dietary sources.

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Universalium. 2010.

Look at other dictionaries:

  • Glutamine — L ou S(+) glutamine (énantiomère biologique) D ou R …   Wikipédia en Français

  • glutamine — [ glytamin ] n. f. • 1884; de glutamique ♦ Biochim. Un des vingt acides aminés constituant les protéines, amide de l acide glutamique. ● glutamine nom féminin Acide aminé permettant à l organisme de neutraliser l action toxique de l ammoniaque en …   Encyclopédie Universelle

  • glutamine — glutamine. См. глутамин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • glutamine — [glo͞ot′ə mēn΄, glo͞ot′əmin] n. [ GLUT(EN) + AMINE] a nonessential amino acid, H2NC(O)(CH2) 2CH(NH2)COOH: see AMINO ACID …   English World dictionary

  • Glutamine — NatOrganicBox Chemical structure of L glutamine name=(2S) 2 amino 4 carbamoyl butanoic acid PubChem = 738 CAS = 56 85 9 ChemSpiderID = 718 SMILES = N [C@@H] (CCC(N)=O)C(O)=O C=5 | H=10 | N=2 | O=3 mass=146.15 g/molGlutamine (abbreviated as Gln or …   Wikipedia

  • glutamine — (= Gln; Q; 146 D) One of the 20 amino acids commonly found (and directly coded for) in proteins. It is the amide at the g carboxyl of the amino acid glutamate. Glutamine can participate in covalent cross linking reactions between proteins, by… …   Dictionary of molecular biology

  • glutamine — glutaminas statusas T sritis chemija formulė H₂NCOCH₂CH₂CH(NH₂)COOH santrumpa( os) Gln, Q, Glu NH₂ atitikmenys: angl. glutamine rus. глутамин ryšiai: sinonimas – 2 amino 4 karbamoilbutano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • glutamine — noun Etymology: International Scientific Vocabulary gluten + amine Date: circa 1885 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 …   New Collegiate Dictionary

  • glutamine — noun A nonessential amino acid CHNO found in most animal and plant proteins. Syn: Gln …   Wiktionary

  • glutamine — The δ amide of glutamic acid, derived by oxidation from proline in the liver or by the combination of glutamic acid with ammonia; the l isomer is present in proteins and in blood and other tissues, and is an important source of urinary ammonia,… …   Medical dictionary

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