ADP-iron as a Fenton reactant: radical reactions detected by spin trapping, hydrogen abstraction, and aromatic hydroxylation.
ADP-iron as a Fenton reactant: radical reactions detected by spin trapping, hydrogen abstraction, and aromatic hydroxylation.
复制标题
ADP-铁作为芬顿反应物：通过自旋捕获、夺氢和芳香羟基化检测到的自由基反应。
DOI：
10.1016/0003-9861(90)90599-t
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发表时间：
1990
影响因子：
3.9
通讯作者：
Floyd,RA
中科院分区：
文献类型：
--
作者：
Gutteridge,JM;Nagy,I;Maidt,L;Floyd,RA
A mixture of ADP, ferrous ions, and hydrogen peroxide (H2O2) generates hydroxyl radicals (.OH) that attack the spin trap DMPO (5,5-dimethyl-pyrollidine-N-oxide) to yield the hydroxyl free radical spin-adduct, degrade deoxyribose and benzoate with the release of thiobarbituric acid-reactive material, and hydroxylate benzoate to give fluorescent products. Inhibition studies, with scavengers of the .OH radical, suggest that the behavior of iron-ADP in the reaction is complicated by the formation of ternary complexes with certain scavengers and detector molecules. In addition, iron-ADP reacting with H2O2appears to release a substantial number of .OH radicals free into solution. During the generation of .OH radicals the ADP molecule was, as expected, damaged by the iron bound to it. Damage to the iron ligand in this way is not normally monitored in reaction systems that use specific detector molecules for .OH radical damage. Under certain reaction conditions the ligand may be the major recipient of .OH radical damage thereby leading to the incorrect assumption that the iron ligand is a poor Fenton reactant.
