A Peptide-mediated Fenton Reaction in Wood-degrading Fungi

被引：0
|
作者：
Wei WANG1
机构：
来源：
Chinese Chemical Letters | 2002年 / 08期
基金：
中国国家自然科学基金;
关键词：
Cellulose degradation; hydroxyl radical HO˙; Gt factor; electron paramagnetic resonance;
D O I：
暂无
中图分类号：
O657.3 [光化学分析法（光谱分析法）];
学科分类号：
摘要：
Gt factor is a low-molecular-weight peptide isolated from the extracellular culture of wood-degrading fungus Gloeophyllum trabeum. It is capable of enhancing degradation of cellulose. Its action mechanism was investigated and it was found that Gt factor could reduce Fe3+ to Fe2+. Electron paramagnetic resonance (EPR) spectroscopy revealed in the presence of O2, Gt factor could drive the formation of H2O2 via a superoxide anion O2.- intermediate and mediate the generation of hydroxyl radical HO˙ in a Fenton-type reaction. All these provided evidence for the formation of HO˙ in some wood-degrading fungi.
引用
收藏
页码：773 / 776
页数：4
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