Momohara I, Matsumoto Y, Ishizu A
Wood Chemistry Laboratory, Faculty of Agriculture, University of Tokyo, Japan.
FEBS Lett. 1990 Oct 29;273(1-2):159-62. doi: 10.1016/0014-5793(90)81074-x.
Degradation of 2-hydroxy-1,4-naphthoquinone (HNQ) by lignin peroxidase is discussed. Degradation rat was remarkably increased by an increase in veratryl alcohol concentration. Degradation is partly prevented by adding OH. scavenger (mannitol or DMSO) to the reaction mixture. Addition of O2-. scavenger (Mn2+) to the reaction mixture completely prevents the degradation. These results suggest that active oxygen species formed in the lignin peroxidase-H2O2-veratryl alcohol system play an important role in HNQ degradation.
讨论了木质素过氧化物酶对2-羟基-1,4-萘醌（HNQ）的降解作用。藜芦醇浓度的增加显著提高了降解率。向反应混合物中添加羟基清除剂（甘露醇或二甲基亚砜）可部分抑制降解。向反应混合物中添加超氧阴离子清除剂（Mn2+）可完全抑制降解。这些结果表明，木质素过氧化物酶-H2O2-藜芦醇体系中形成的活性氧物种在HNQ降解中起重要作用。
