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ornithine


 Term: ornithine
Literally meaning: “pertaining to birds”
Origin: Anc Greek
όρνις/ornis(=bird) > όρνυμι /ornymi(=stand up, rise, stimulate)
Coined/History 
In 1877 chemist Jaffe isolated ornithine from ornithuric acid which was discovered in the urine of birds.
(Jaffe, M. 1877 Uber das Verhatten der Benzoesaure im organismus der Vogel. Beri.Deutsch. Chem. Gesellsch., 10: 1925).

Definition
ornithine
L-ornithine is an important part of urea cycle in order to dispose of excess nitrogen as it is  the result of breakdown  of L-arginine after  the action of enzyme arginase. Ornithine also helps for formation of aminoacids : proline, glutamic acid and citrulline.

1 comment:

  1. Ornithine is also one of 4 amino acids which together synthetically mimic the action of hGH (human growth hormone) offering the extension of life, as Dr Dan'l Rudman of the Univ of Wisconsin showed in 1990, when the pituitary posterior lobe stops emitting the stuff in natural aging. -- Dr Andrew Tempelman

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