Extracellular peroxidases involved in lignin degradation by the white rot: Basidiomycete Phanerochate chrysosporium

Michael H. Gold, Hiroyuki Wariishi, Khadar Valli

Research output: Contribution to journalConference article

218 Citations (Scopus)

Abstract

The white rot basidiomycete Phanerochaete chrysosporium secretes two soluble H2O2-requiring peroxidases which are involved in lignin degradation. Both lignin peroxidase (LiP) and manganese peroxidase (MnP) form the oxidized intermediates compound I and compound II. LiP catalyzes the one-electron oxidation of a variety of substrates to generate aryl cation radicals. These radicals undergo subsequent nonenzymic reactions to yield a multiplicity of final products. MnP oxidizes MnII to MnIII which acts as a unique redox couple, and in turn oxidizes phenolic substrates to phenoxy radicals, which undergo subsequent reactions to yield the final products.

Original languageEnglish
Pages (from-to)127-140
Number of pages14
JournalACS Symposium Series
Issue number389
Publication statusPublished - Dec 1 1989
Externally publishedYes
EventThird Chemical Congress of North America (195th National Meeting of the American Chemical Society) - Biocatalysis in Agricultural Biotechnology - Toronto, Ont, Can
Duration: Jun 5 1988Jun 11 1988

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this