ho·mo·cit·rul·line (ho″mo-sitґroo-lēn) an unusual amino acid formed by carbamoylation of the epsilon amino group of lysine; it is not normally present in urine but is excreted in hyperornithinemia-hyperammonemia-homocitrullinuria syndrome (q.v.).

Medical dictionary. 2011.

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  • Lysine carbamoyltransferase — In enzymology, a lysine carbamoyltransferase (EC number| is an enzyme that catalyzes the chemical reaction:carbamoyl phosphate + L lysine ightleftharpoons phosphate + L homocitrullineThus, the two substrates of this enzyme are carbamoyl… …   Wikipedia

  • homocitrullinuria — An inherited disorder associated with elevated urinary levels of homocitrulline. * * * ho·mo·cit·rul·lin·uria (ho″mo sit″roo lĭ nuґre ə) excess of homocitrulline in the urine; see hyperornithinemia hyperammonemia… …   Medical dictionary

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