One-electron oxidation of glutathione by azide radicals in neutral medium: A gamma and pulse radiolysis study

Autor: Zohreh Abedinzadeh, Monique Gardès-Albert, Christiane Ferradini
Rok vydání: 1991
Předmět:
Zdroj: International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry. 38:1-5
ISSN: 1359-0197
DOI: 10.1016/1359-0197(91)90036-2
Popis: The selective interactions of azide radicals with glutathione (GSH) have been quantitatively studied in buffered neutral aqueous solutions using γ and pulse radiolysis. The sulfur centered GS and GSSG⨪ radicals are produced in pulse and γ radiolysis. Kinetic experiments and simulation allowed to estimate the rate constant of N3 with GSH which has been found to be equal to (9.5 ± 0.5) × 106M−1 s−1 at pH 7. In steady state radiolysis, we have found GSSG as the final product formed with an initial G value of 2.9 × 10−7 mol J−1.
Databáze: OpenAIRE