Involvement of veratryl alcohol and active oxygen species in degradation of a quinone compound by lignin peroxidase.
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.
Momohara
I
I
Wood Chemistry Laboratory, Faculty of Agriculture, University of Tokyo, Japan.
Matsumoto
Y
Y
Ishizu
A
A
D000363:Agaricales / Q000201:enzymology; D001592:Benzyl Alcohols / Q000494:pharmacology*; D016166:Free Radical Scavengers; D007700:Kinetics; D009285:Naphthoquinones / Q000378:metabolism*; D010544:Peroxidases / Q000378:metabolism*; D013481:Superoxides / Q000378:metabolism
D001592:Benzyl Alcohols; D016166:Free Radical Scavengers; D009285:Naphthoquinones; D013481:Superoxides; D010544:Peroxidases; C042858:lignin peroxidase; C042197:veratryl alcohol; C005090:lawsone