PMID: 11342257May 9, 2001Paper

Studies on reactions of oxidizing sulfur-sulfur three-electron-bond complexes and reducing alpha-amino radicals derived from OH reaction with methionine in aqueous solution

Biochimica Et Biophysica Acta
C LuN Lin

Abstract

The technique of pulse radiolysis with spectrophotometric detection has been used to investigate the possibility of electron transfer reactions between oxidizing sulfur-sulfur three-electron-bond complexes (Met2/S thereforeS+), or reducing alpha-amino radicals (CH3SCH2CH2CH.NH2) derived from reaction of methionine with OH radicals and hydroxycinnamic acid (HCA) derivatives, riboflavin (RF) or flavin adenine dinucleotide (FAD), respectively. The HCA derivatives, such as caffeic acid, ferulic acid, sinapic acid and chlorogenic acid, widely distributed phenolic acids in fruit and vegetables, have been identified as good antioxidants previously can rapidly and efficiently repair oxidizing three-electron-bond complexes via electron transfer. RF and FAD can oxidize reducing alpha-amino radicals derived from methionine. The electron transfer rate constants approximately 10(9) dm3 x mol(-1)x s(-1) were determined by following the build-up kinetics of species produced.

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Citations

Apr 29, 2006·Radiation and Environmental Biophysics·Hongping ZhuSide Yao
Oct 3, 2006·Biochimica Et Biophysica Acta·Hongping ZhuSide Yao
Mar 16, 2005·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Kwok Keung ChanMai Har Sham
Dec 7, 2005·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Götz BucherWolfram Sander
Sep 26, 2020·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Prasenjit MondalAdity Bose
Sep 21, 2021·Journal of Interferon & Cytokine Research : the Official Journal of the International Society for Interferon and Cytokine Research·Long WangTao Luo

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