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Thiol-induced hydroxyl radical formation and scavenger effect of thiocarbamides on hydroxyl radicals
Journal of Inorganic Biochemistry, 1986The effects of thiols and thiocarbamides on hydroxyl radical (.OH) formation by the hypoxanthine(HYP)-xanthine oxidase(XOD)-Fe3+ .EDTA system were investigated in the range of 0.5-5 mM by colorimetrically measuring salicylate hydroxylation. Thiocarbamides powerfully inhibited the hydroxylation while thiols showed a paradoxical effect, enhancing it at ...
N, Motohashi, I, Mori
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Glycol Splitting by Hydroxyl Radicals
Nature, 1946RECENTLY1 I suggested, on theoretical grounds, that the splitting of I±-glycols to aldehydes or ketones by means of lead tetra-acetate was due to dehydrogenation by free acetate radicals.
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Effective Inhibition of Hydroxyl Radicals by Hydroxylated Biphenyl Compounds
Free Radical Research Communications, 1993In aqueous media, approximate rate constants for the reactions between hydroxyl radicals (.OH) and biphenyl compounds such as dehydrodieugenol, magnolol, honokiol, dehydrodidihydroeugenol, dehydrodivanillyl alcohol, and dehydrodicreosol were estimated by competition reactions for .OH between these biphenyls and 5,5-dimethyl-1-pyrroline-N-oxide (DMPO ...
J, Taira +5 more
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Addition Radicals Formed by Hydroxyl Radical Bombardment of Uracil
Science, 1966Direct addition of O—H radicals at room temperature to the carbon No. 5 of the uracil ring has been proved by measurement of the proton hyperfine structure in the electron spin resonance of the resulting uracil + O—H radicals. Upon addition of the OH, the H originally bound to carbon No. 5 shifts to No. 6, thus forming a methylene group at carbon No. 6,
Herak, Janko, Gordy, Walter
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DNA Footprinting with the Hydroxyl Radical
Free Radical Research Communications, 1991The Fenton reaction of iron(II) EDTA with hydrogen peroxide, performed in the presence of ascorbate ion, has proven to be useful as a probe of structure in DNA systems. Two aspects of this chemistry are discussed: the identity of the active DNA cleaving agent produced by this reagent, and the application of the Fenton reaction to the determination of ...
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2000
Abstract Hydroxyl radicals have now been used for more than 15years to probe the structure of various macromolecules. They have also been widely used to footprint DNA-protein and RNA-protein complexes (1, 2). Hydroxyl radicals are w1y small, comparable in size to a water molecule, are most commonly generated from FeEDTA in solution by
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Abstract Hydroxyl radicals have now been used for more than 15years to probe the structure of various macromolecules. They have also been widely used to footprint DNA-protein and RNA-protein complexes (1, 2). Hydroxyl radicals are w1y small, comparable in size to a water molecule, are most commonly generated from FeEDTA in solution by
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Free-radical hydroxylation of steroids
Journal of the American Chemical Society, 1972A, Rotman, Y, Mazur
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Melatonin as a hydroxyl radical scavenger
Journal of Pineal Research, 1998P, Stasica, P, Ulanski, J M, Rosiak
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