In silico-designed lignin peroxidase fromPhanerochaete chrysosporiumshows enhanced acid stability for depolymerization of lignin.Pham, L.T.M., Seo, H., Kim, K.J., Kim, Y.H.
(2018) Biotechnol Biofuels 11: 325-325
- PubMed: 30555531
- DOI: 10.1186/s13068-018-1324-4
- PubMed Abstract:
The lignin peroxidase isozyme H8 from the white-rot fungus <i>Phanerochaete chrysosporium </i> (LiPH8) demonstrates a high redox potential and can efficiently catalyze the oxidation of veratryl alcohol, as well as the degradation of recalcitrant lig ...
The lignin peroxidase isozyme H8 from the white-rot fungus Phanerochaete chrysosporium (LiPH8) demonstrates a high redox potential and can efficiently catalyze the oxidation of veratryl alcohol, as well as the degradation of recalcitrant lignin. However, native LiPH8 is unstable under acidic pH conditions. This characteristic is a barrier to lignin depolymerization, as repolymerization of phenolic products occurs simultaneously at neutral pH. Because repolymerization of phenolics is repressed at acidic pH, a highly acid-stable LiPH8 could accelerate the selective depolymerization of recalcitrant lignin.
2School of Life Sciences (KNU Creative BioResearch Group), KNU Institute for Microorganisms, Kyungpook National University, Daehak-ro 80, Buk-gu, Daegu, 41566 Republic of Korea.,1School of Energy and Chemical Engineering, UNIST, 50 UNIST-gil, Ulju-gun, Ulsan, 44919 Republic of Korea.