In vitro depolymerization of lignin by manganese peroxidase of Phanerochaete chrysosporium

Hiroyuki Wariishi, Khadar Valli, Michael H. Gold

Research output: Contribution to journalArticle

242 Citations (Scopus)

Abstract

Homogeneous manganese peroxidase catalyzed the in vitro partial depolymerization of four different 14C-labeled synthetic lignin preparations. Gel permeation profiles demonstrated significant depolymerization of 14C-sidechain-labeled syringyl lignin, a 14C-sidechain-labeled syringyl-guaiacyl copolymer (angiosperm lignin), and depolymerization of 14C-sidechain- and 14C-ring-labeled guaiacyl lignins (gymnosperm lignin). 3,5-Dimethoxy-1,4-benzoquinone, 3,5-dimethoxy-1,4-hydroquinone, and syringylaldehyde were identified as degradation products of the syringyl and syringyl-guaiacyl lignins. These results suggest that manganese peroxidase plays a significant role in the depolymerization of lignin by Phanerochaete chrysosporium.

Original languageEnglish
Pages (from-to)269-275
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume176
Issue number1
DOIs
Publication statusPublished - Apr 15 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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