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By Packer L.

This distinctive, state of the art reference provides an in depth account of the molecular mechanisms underlying the a number of capabilities of biothiols-emphasizing the organic and medical implications of interactions among oxidants and biothiols.

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By Packer L.

This distinctive, state of the art reference provides an in depth account of the molecular mechanisms underlying the a number of capabilities of biothiols-emphasizing the organic and medical implications of interactions among oxidants and biothiols.

Show description

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Sivarajah, J. Biol. Chem. 260, 1601 (1985). 38 L. G. Forni, V. O. Mora-Arellano, J. E. Packer, and R. L. Willson, J. Chem. , Perkin Trans. 2, 1579 (1988). 39 B. C. Gilbert, in "Sulfur-Centered Reactive Intermediates in Chemistry and Biology" (C. -D. ), p. 135. Plenum, New York, 1990. 4o M. D. Sevilla, D. Becker, and M. Yan, Int. J. Radiat. Biol. 57, 65 (1990). ) have been subject to extensive investigation whereas ESR spectra of the thiyl radical itself are generally hardly observable or difficult to analyze.

65. VHC, New York, 1987. [41 KINETICS OF THIOL REACTIONS 47 on the order of tl/2 H 1 msec, and has been extensively used to study the fast reactions of carbon-centered radicals from carbohydrates and model alcohols and ethers with various thiols. A detailed description of the technique including experimental setup, dosimetry, and analysis of the results has been reported. 4-6 Pulse radiolysis allows the formation of a carboncentered radical of interest according to the general radiation chemical processes (4)-(7).

259, 5606 (1984). 75 C. C. Winterbourn, Free Radical Biol. Med. 14, 85 (1993). [4] KINETICS OF THIOL REACTIONS 45 tion against oxidative damage has been reviewed. TM Evidence for the view that ascorbate may be about as important a radical sink as oxygen with respect to radical reaction cascades that involve thiyl radicals has been obtained from observations that the ascorbyl radical concentration in skin increases when carbon-centered radicals are induced by ultraviolet photolysis. 77 This could arise if the radicals are "repaired" by Eq.

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