glutathione

glu·ta·thi·one   (glōō'tə-thī'ōn')    n.  A polypeptide, C10H17N3O6S, of glycine, cysteine, and glutamic acid that occurs widely in plant and animal tissues and is important in biological oxidation-reduction reactions. [gluta(mine) + thi(o)- + -one.]

Main Entry: glu·ta·thi·one
Pronunciation: "glüt-&-'thI-"On
Function: noun
: a peptideC₁₀H₁₇N₃O₆S that contains one amino acid residue each of glutamic acid, cysteine, and glycine, that occurs widely in plant and animal tissues, and that playsan important role in biological oxidation-reduction processes and as a coenzyme

glutathione glu·ta·thi·one (gl&oomacr;'tə-thī'ōn')
n.
A tripeptide of the amino acids glycine, cystine, and glutamic acid occurring widely in plant and animal tissues and forming reduced and oxidized forms important in biological oxidation-reduction reactions.

glutathione

a tripeptide (i.e., compound composed of three amino acids), the chemical name of which is gamma-l-glutamyl-l-cysteinylglycine. Widely distributed in nature, it has been isolated from yeast, muscle, and liver. Glutathione has a role in the respiration of both mammalian and plant tissues and protects red blood cells against hydrogen peroxide, which is a toxic by-product of many metabolic reactions, by reducing the peroxide to water. It serves as a cofactor for various enzymes; e.g., glyceraldehyde-3-phosphate dehydrogenase, to which it becomes firmly bound.

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