Definition of ornithine in English:

Share this entry

ornithine

Pronunciation: /ˈôrnəˌTHēn/

noun

Biochemistry
An amino acid produced by the body that is important in protein metabolism.
Example sentences
  • About 50-percent of ingested arginine is rapidly converted in the body to ornithine, primarily by the enzyme arginase.
  • When your body doesn't digest protein completely, gut bacteria convert two of the amino acids in protein, arginine and ornithine, to compounds called polyamines.
  • This may occur in part as a result of pathologically elevated activity of arginase, an enzyme that hydrolyzes arginine to ornithine and urea.

Origin

Late 19th century: from ornitho- (with reference to a constituent found in bird excrement) + -ine4.

For editors and proofreaders

Syllabification: or·ni·thine

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.