OXIDATIVE-DEGRADATION OF NONPHENOLIC LIGNIN DURING LIPID-PEROXIDATION BY FUNGAL MANGANESE PEROXIDASE

被引：173

作者：

BAO, WL ^{[1
]}

FUKUSHIMA, Y ^{[1
]}

JENSEN, KA ^{[1
]}

MOEN, MA ^{[1
]}

HAMMEL, KE ^{[1
]}

机构：

[1] USDA,FOREST PROD LAB,MADISON,WI 53705

来源：

FEBS LETTERS | 1994年 / 354卷 / 03期

关键词：

MANGANESE PEROXIDASE; LIPID PEROXIDATION; LIGNINOLYSIS; NONPHENOLIC LIGNIN; WHITE-ROT FUNGUS;

D O I：

10.1016/0014-5793(94)01146-X

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A non-phenolic lignin model dimer, 1-(4-ethoxy-3-methoxyphenyl)-2-phenoxypropane-1,3-diol, was oxidized by a lipid peroxidation system that consisted of a fungal manganese peroxidase, Mn(II), and unsaturated fatty acid esters. The reaction products included 1-(4-ethoxy-3-methoxyphenyl)-1-oxo-2-phenoxy-3-hydroxypropane and 1-(4-ethoxy-3-methoxyphenyl)-1-oxo-3-hydroxypropane, indicating that substrate oxidation occurred via benzylic hydrogen abstraction. The peroxidation system depolymerized both exhaustively methylated (non-phenolic) and unmethylated (phenolic) synthetic lignins efficiently. It may therefore enable white-rot fungi to accomplish the initial delignification of wood.

引用

页码：297 / 300

页数：4

共 22 条

[1]

[Anonymous], 2015, FREE RADICAL BIO MED

[2] INTRACELLULAR AND EXTRACELLULAR LOCALIZATION OF LIGNIN PEROXIDASE DURING THE DEGRADATION OF SOLID WOOD AND WOOD FRAGMENTS BY PHANEROCHAETE-CHRYSOSPORIUM BY USING TRANSMISSION ELECTRON-MICROSCOPY AND IMMUNO-GOLD LABELING [J].