ornithine


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or·ni·thine

 (ôr′nə-thēn′)
n.
An amino acid, C5H12N2O2, not found in proteins, formed by hydrolyzing arginine and important in the formation of urea.

[ornith(uric acid), an acid found in birds' urine (ornith(o)- + uric acid) + -ine.]

ornithine

(ˈɔːnɪˌθiːn)
n
(Biochemistry) an amino acid produced from arginine by hydrolysis: involved in the formation of urea in the liver; diaminopentanoic acid. Formula: NH2(CH2)3CHNH2COOH
[C19: from ornithuric (acid) secreted in the urine of birds, from ornitho- + uric]

or•ni•thine

(ˈɔr nəˌθin)

n.
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]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ornithine - an amino acid that does not occur in proteins but is important in the formation of urea
amino acid, aminoalkanoic acid - organic compounds containing an amino group and a carboxylic acid group; "proteins are composed of various proportions of about 20 common amino acids"
Translations
Ornithin
ornithine
ornityna

or·ni·thine

n. ornitina, aminoácido que aunque no está presente en las proteínas desempeña un papel importante en el ciclo de la urea.
References in periodicals archive ?
Ultragenyx Pharmaceutical announced positive longer-term safety and efficacy data from the first dose cohort of the Phase 1/2 study of DTX301, an investigational adeno-associated virus gene therapy for the treatment of ornithine transcarbamylase deficiency.
The concentrations of three amino acids, namely arginine, citrulline and ornithine, were analysed from their fasting glucose samples, and this data was used to calculate their global arginine bioavailability ratio (GABR).
It may also contain an amino acid, ornithine, and some selenium, an antioxidant.
DTX301 is intended for the treatment of ornithine transcarbamylase deficiency.
These enzymes are carbamoyl phosphate synthetase 1 (CPS1), ornithine transcarbamylase (OTC), argininosuccinate synthetase (ASS), argininosuccinate lyase (ASL), arginase and N-acetylglutamate synthetase.
Indole- Neg; TSI-K/A, no H2S; Urease -Neg, Citrate +ve, Oxidase -Neg, Lysine +ve, Ornithine +ve, Arginine - Neg, PPA -Neg, Reduced nitrate to nitrite, ONPG +ve, Glucose- Acid, no gas; Sucrose-Acid, no gas; Mannitol-Acid, no gas; Arabinosenot fermented.
Raw data indicated that GanedenBC 30 had a positive effect (increases) on the absorption of a number of these key amino acids: Leucine by 23 per cent, Isoluecine by 20 per cent, Valine by seven per cent, Glutamine by 116 per cent, Ornithine by 100 per cent, Tryptophan by 100 per cent and Citrulline by 128 per cent.
The other isoenzyme, arginase II, is engaged in ornithine creation.
As a baby she had been diagnosed with ornithine transcarbamylase (OTC) deficiency, which means her body builds up dangerous levels of ammonia and need constant monitoring.
Billy was born with a condition called ornithine transcarbamylase deficiency.
These biochemical findings were consistent with ornithine transcarbamylase (OTC) deficiency.
Jesse Gelsinger was a young man with an inborn error of metabolism called ornithine transcarbamylase deficiency or OTC.