noun Etymology: International Scientific Vocabulary ornithuric acid (a compound of which ornithine is a component, found in the urine of birds) + 2-ine Date: 1881 a crystalline amino acid C5H12N2O2 that functions especially in urea production as a carrier by undergoing conversion to citrulline and then arginine in reaction with ammonia and carbon dioxide followed by recovery along with urea by enzymatic hydrolysis of arginine

New Collegiate Dictionary. 2001.

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  • Ornithine — Formule topologique de l ornithine. Général No CAS …   Wikipédia en Français

  • ornithine — ornithine. См. орнитин. (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.

  • ornithine — ● ornithine nom féminin Acide aminé basique, glycoformateur et transaminable, jouant un rôle dans le cycle de l uréogenèse. (Le dérivé guanidinique est l arginine.) …   Encyclopédie Universelle

  • ornithine — [ôr′nə thēn΄, ôr′nəthin] n. [< Gr ornis, bird (see ORNITHO ) + INE3] a nonessential amino acid, NH2 (CH2) 3CH(NH2)COOH, found in animals as a product of urea formation from proteins and in the excrement of birds …   English World dictionary

  • Ornithine — L Ornithine IUPAC name L Ornithine …   Wikipedia

  • ornithine — ornitinas statusas T sritis chemija formulė H₂N(CH₂)₃CH(NH₂)COOH santrumpa( os) Orn atitikmenys: angl. ornithine rus. орнитин ryšiai: sinonimas – 2,5 diaminopentano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • ornithine — noun an amino acid that does not occur in proteins but is important in the formation of urea • Hypernyms: ↑amino acid, ↑aminoalkanoic acid * * * ornithine Chem. (ˈɔːnɪθaɪn) [f. Gr. ὀρνῑθ bird + ine5.] A base, C5H12N2O2, which enters into the… …   Useful english dictionary

  • ornithine — /awr neuh theen /, n. Biochem. an amino acid, H2N(CH2)3CH(NH2)COOH, obtained by the hydrolysis of arginine and occurring as an intermediate compound in the urea cycle of mammals. [1880 85; ornith(uric acid), secreted by birds + INE2] * * * …   Universalium

  • ornithine — noun An amino acid, 2,5 diaminopentanoic acid, that is not present in protein, but is an intermediate in the biosynthesis of urea …   Wiktionary

  • ornithine — 2,5 Diaminovaleric acid; the l isomer is the amino acid formed when l arginine is hydrolyzed by arginase; not a constituent of proteins, but an important intermediate in the urea cycle; elevated levels seen in certain defects of the urea cycle. o …   Medical dictionary

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