| .OH诱导氧化磷酰化甲硫氨酸机理的脉冲辐解研究 |
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| 引用本文： | 储高升,姚思德,张曼维,张志成,王文峰,汪世龙. .OH诱导氧化磷酰化甲硫氨酸机理的脉冲辐解研究[J]. 化学学报, 1997, 55(7): 703-709 |
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| 作者姓名： | 储高升 姚思德 张曼维 张志成 王文峰 汪世龙 |
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| 作者单位： | 中国科学技术大学应用化学系辐射化学教研室;中国科学院上海原子核研究所;中国科学院辐射化学开放研究实验室 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用脉冲辐解动态吸收光谱研究了.OH自由基诱导N-二异丙基磷酰化甲硫氨酸(NDM)水溶液的氧化过程, 结果表明.OH主要进攻NDM中硫原子, 并形成含硫三电子键NDM2^+[S], 其在480nm处有最大吸收峰, 形成和衰变均呈一级反应, 推导了反应机理,并与.OH自由基诱导氧化甲硫氨酸水溶液机理进行了比较。
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| 关 键 词： | 氧化 反应机理 诱导 脉冲辐解 羟基自由基 二异丙基磷酰化甲硫氨酸 |
Pulse radiolytic study on mechanism of the .OH radical induced oxidation of phosphorylmethionine in aqueous solution |
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| YAO SIDE,ZHANG MANWEI,ZHANG ZHICHENG,WANG WENFENG,WANG SHILONG. Pulse radiolytic study on mechanism of the .OH radical induced oxidation of phosphorylmethionine in aqueous solution[J]. Acta Chimica Sinica, 1997, 55(7): 703-709 |
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| Authors: | YAO SIDE ZHANG MANWEI ZHANG ZHICHENG WANG WENFENG WANG SHILONG |
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| Abstract: | The .OH radical induced oxidation process of N-Diisopropyloxy-phosphonylmethionine (NDM) in N2O-saturated aqueous solution has been investigated by pulse radiolysis techniques. It was found that .OH radical attacked the sulfur atom in NDM to produce a sulfur-containing three-electronbonded (NDM2^+[S]) radical cation which showed a characteristic absorption peak at 480nm. The formation and decay rate constants of this transient species have been determined and the reaction mechanisms under identical conditions of NDM and Met have been compared. |
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| Keywords: | OXIDATION REACTION MECHANISM INDUCTION |
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