Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Ornithine is a non-proteinogenic α-amino acid that plays a role in the urea cycle. Ornithine is abnormally accumulated in the body in ornithine transcarbamylase deficiency. The radical is ornithyl.[2]
^Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, FL: CRC Press. p. C-408. ISBN 0-8493-0462-8.
^Sivashanmugam M (February 2017). "Ornithine and its role in metabolic diseases: An appraisal". Biomed Pharmacother. 86: 185–194. doi:10.1016/j.biopha.2016.12.024. PMID 27978498.
Ornithine is a non-proteinogenic α-amino acid that plays a role in the urea cycle. Ornithine is abnormally accumulated in the body in ornithine transcarbamylase...
Ornithine transcarbamylase (OTC) (also called ornithine carbamoyltransferase) is an enzyme (EC 2.1.3.3) that catalyzes the reaction between carbamoyl...
The enzyme ornithine decarboxylase (EC 4.1.1.17, ODC) catalyzes the decarboxylation of ornithine (a product of the urea cycle) to form putrescine. This...
Ornithine transcarbamylase deficiency also known as OTC deficiency is the most common urea cycle disorder in humans. Ornithine transcarbamylase, the defective...
The urea cycle (also known as the ornithine cycle) is a cycle of biochemical reactions that produces urea (NH2)2CO from ammonia (NH3). Animals that use...
Ornithine translocase is responsible for transporting ornithine from the cytosol into the mitochondria in the urea cycle. It is highly expressed in the...
an ornithine racemase (EC 5.1.1.12) is an enzyme that catalyzes the chemical reaction: L-ornithine ⇌ {\displaystyle \rightleftharpoons } D-ornithine Hence...
structure of arginine. Schulze and Winterstein synthesized arginine from ornithine and cyanamide in 1899, but some doubts about arginine's structure lingered...
Ornithine translocase deficiency, also called hyperornithinemia-hyperammonemia-homocitrullinuria (HHH) syndrome, is a rare autosomal recessive urea cycle...
damage, in addition to gastrointestinal side effects. The combination of L-ornithine and L-aspartate (LOLA) lowers the level of ammonia in a person's blood...
Ornithine oxoglutarate (OGO) or ornithine α-ketoglutarate (OKG) is a drug used in liver therapy. It is the salt formed from ornithine and alpha-ketoglutaric...
Ornithine aminotransferase (OAT) is an enzyme which is encoded in human by the OAT gene located on chromosome 10. The OAT involved in the ultimate formation...
N2-acetyl-L-ornithine + H2O ⇌ {\displaystyle \rightleftharpoons } acetate + L-ornithine Thus, the two substrates of this enzyme are N2-acetyl-L-ornithine and...
molecular biology, Ornithine decarboxylase antizyme (ODC-AZ) is an ornithine decarboxylase inhibitor. It binds to, and destabilises, ornithine decarboxylase...
6.1.11) is an enzyme that catalyzes the chemical reaction N2-acetyl-L-ornithine + 2-oxoglutarate ⇌ {\displaystyle \rightleftharpoons } N-acetyl-L-glutamate...
Ornithine aminotransferase deficiency (also known as gyrate atrophy of the choroid and retina) is an inborn error of ornithine metabolism, caused by decreased...
then enters the urea cycle in which it reacts with ornithine (a process catalyzed by the enzyme ornithine transcarbamylase) to form citrulline. Carbamoyl...
is taken intravenously (injection into a vein) or topically. It is an ornithine decarboxylase inhibitor. Common side effects when applied as a cream include...
eukaryotic cells. The precursor for synthesis of spermine is the amino acid ornithine. It is an essential growth factor in some bacteria as well. It is found...
second pathway, arginine is converted into ornithine and then ornithine is converted into putrescine by ornithine decarboxylase (ODC). Putrescine is found...
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