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Reaction of the hydroxyl radical with glutathione in neutrai and alkaline aqueous solution

Journal Article · · Radiat. Res.; (United States)
DOI:https://doi.org/10.2307/3575771· OSTI ID:5431000
 [1]; ;
  1. Royal Inst. of Tech., Stockholm, Sweden
The reaction of OH with glutathione (..gamma..-glu-cys-gly) in neutral and alkaline aqueous solutions has been studied by pulse radiolysis. In addition to the sulfur-centered GS-(GSSG/sup -/.) radical formed by electron transfer or hydrogen abstraction from GS/sup -/ (GSH), at least one carbon-centered radical is formed with pH-dependent yield by hydrogen abstraction from the ..gamma..-glutamyl moiety. The latter radical is transformed in a first-ordered reaction most probably to a carbon-centered radical on the cysteine group. No evidence for the formation of carbon-centered radicals was found in comparable experiments with cysteine and 2-mercaptopropionylglycine.
OSTI ID:
5431000
Journal Information:
Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 89:2; ISSN RAREA
Country of Publication:
United States
Language:
English