超氧化物介导的叶绿素在二甲基亚砜-水混合物中的异构化
Superoxide mediated chlorophyll allomerization in a dimethyl sulphoxide-water mixture.
作者信息
Merzlyak M N, Kovrizhnikh V A, Timofeev K N
机构信息
Department of Cell Physiology & Immunology, Faculty of Biology, Moscow State University, USSR.
出版信息
Free Radic Res Commun. 1991;15(4):197-201. doi: 10.3109/10715769109049141.
The interaction of chlorophyll a with superoxide anion was studied in an alkaline DMSO-water system. It was found that O2(-.), directly or via HO2., produces the chlorophyll enolate-ion (Molish's intermediate) that is oxidized to Mg-chlorine(s). The allomerization reaction was found to be inhibited by superoxide dismutase. A possible participation of oxygen radicals in chlorophyll degradation in plants is discussed.
在碱性二甲基亚砜 - 水体系中研究了叶绿素a与超氧阴离子的相互作用。发现超氧阴离子（O2(-.)）直接或通过过氧化氢自由基（HO2.）产生叶绿素烯醇离子（莫利施中间体），该中间体被氧化为镁 - 氯（化合物）。发现超氧化物歧化酶抑制了异构化反应。讨论了氧自由基可能参与植物叶绿素降解的情况。
Zotero 插件