different between metabolite vs kynurenine

English

From metabolism +? -ite.

metabolite (plural metabolites)

Any substance produced by, or taking part in, a metabolic reaction.
- 2001, Leslie Iversen, Drugs: A Very Short Introduction, Oxford, p. 33.
  Cannabis and some of its metabolites, for example, persist in the fat stores of the body for several weeks after a single dose.
- 2015, Ferris Jabr, How Humans Ended Up With Freakishly Huge Brains, Wired:
  In addition to looking at gene expression, Bozek and her colleagues analyzed levels of metabolites, a diverse group of small molecules that includes sugars, nucleic acids and neurotransmitters. Many metabolites are either necessary for metabolism or produced by it.

kynurenine (countable and uncountable, plural kynurenines)

(organic chemistry) A metabolite, 2-amino-4-(2-aminophenyl)- 4-oxo-butanoic acid, that is an intermediate in the conversion of tryptophan to niacin.

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