释义 |
ornithine /ˈɔːnɪθiːn /noun [mass noun] BiochemistryAn amino acid which is produced by the body and is important in protein metabolism.- Chemical formula: NH2(CH2)3CH(NH2)COOH.
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.
OriginLate 19th century: from ornitho- (with reference to a constituent found in bird excrement) + -ine4. |