asparagine

asparagine
NH2COCH2CH(NH3+COO−; the β-amide of aspartic acid, the l-isomer is a nutritionally nonessential amino acid occurring in proteins; a diuretic.
- a. ligase an acid:ammonia ligase (amide synthetase) forming l-a. and l-glutamate from l-aspartate and l-glutamine, with the concomitant cleavage of ATP to AMP and pyrophosphate. Under nonphysiological conditions, the mammalian enzyme can use ammonia as the nitrogen donor. A. ligase also displays a glutaminase-like activity. SYN: a. synthetase.
- a. synthetase SYN: a. ligase.

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as·par·a·gine ə-'spar-ə-.jēn n a white crystalline amino acid C4H8N2O3 that is an amide of aspartic acid abbr. Asn

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n.

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as·par·a·gine (ə-sparґə-jēn) (ə-sparґə-jin) [Gr. asparagos asparagus] a nonessential amino acid that is the β-amide of aspartic acid. It is found in most plants, and has diuretic properties. It is used as a culture medium for certain bacteria. Symbols Asn and N. See also table at amino acid.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Asparagine — L ou S( ) asparagine D ou R(+) asparagine …   Wikipédia en Français

  • asparagine — [ asparaʒin ] n. f. • 1817; du rad. du lat. asparagus « asperge » ♦ Biochim. Acide aminé naturel, amide de l acide aspartique. ● asparagine nom féminin Amide de l acide aspartique, dont l une des trois formes, la l asparagine, fait partie des 20… …   Encyclopédie Universelle

  • Asparagine — As*par a*gine, n. [Cf. F. asparagine.] (Chem.) A white, nitrogenous, crystallizable substance, {C4H8N2O3+H2O}, found in many plants, and first obtained from asparagus. It is believed to aid in the disposition of nitrogenous matter throughout the… …   The Collaborative International Dictionary of English

  • asparagine — [as par′ə jēn΄, asper′jēn; as par′əjin΄] n. [Fr < L asparagus (see ASPARAGUS) + Fr ine, INE3] a nonessential amino acid, NH2COCH2CH(NH2)COOH …   English World dictionary

  • Asparagine — For other articles using the abbreviation or acronym asn, see ASN (disambiguation). L Asparagine …   Wikipedia

  • asparagine — (= b asparagine; Asn; N; 132D) …   Dictionary of molecular biology

  • asparagine — /euh spar euh jeen , jin/, n. a white, crystalline, amino acid, NH2COCH2CH(NH2)COOH, soluble in water, obtained from certain plants, esp. legumes, and used chiefly as a nutrient in culture media for certain bacteria. Abbr.: Asn; Symbol: N [1805… …   Universalium

  • asparagine — asparaginas statusas T sritis chemija formulė H₂NCOCH₂CH(NH₂)COOH santrumpa( os) Asn, N, Asp–NH₂ atitikmenys: angl. asparagine rus. аспарагин ryšiai: sinonimas – 2 amino 3 karbamoilpropano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • asparagine [Asn] — asparagine [Asn]. См. аспарагин [Асн]. (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.

  • Asparagine-tRNA ligase — In enzymology, an asparagine tRNA ligase (EC number|6.1.1.22) is an enzyme that catalyzes the chemical reaction:ATP + L asparagine + tRNAAsn ightleftharpoons AMP + diphosphate + L asparaginyl tRNAAsnThe 3 substrates of this enzyme are ATP, L… …   Wikipedia

  • Asparagine-oxo-acid transaminase — In enzymology, an asparagine oxo acid transaminase (EC number|2.6.1.14) is an enzyme that catalyzes the chemical reaction:L asparagine + a 2 oxo acid ightleftharpoons 2 oxosuccinamate + an amino acidThus, the two substrates of this enzyme are L… …   Wikipedia

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