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Characterizing lignin in a fungus-cultivating termite

Lignin is a heterogenous plant cell wall polyphenol derived primarily from hydroxycinnamyl alcohols via combinatorial radical coupling reactions containing ether- and C-C linkages [2]. Its depolymerization is challenging, making lignin a major barrier to gaining access to stored energy within lignocellulosic materials [3]. Termites from the sub family ...

Author(s):

Hongjie Li; Daniel J. Yelle; John Ralph; Cameron R. Currie; Jianchu Mo

Year:

2018

Keywords:

Lignin, symbiosis, age polyethism, carbohydrate, NMR

Source:

In: Proceedings, polyphenols communication, the XXIXth international conference on polyphenols. 2 p.

Fungal lignin peroxidase does not produce the veratryl alcohol cation radical as a diffusible ligninolytic oxidant

Peroxidases are considered essential agents of lignin degradation by white-rot basidiomycetes. However, low-molecularweight oxidants likely have a primary role in lignin breakdown because many of these fungi delignify wood before its porosity has sufficiently increased for enzymes to infiltrate. It has been proposed that lignin peroxidases (LPs, EC 1.11.1.14) fulfill...

Author(s):

Carl J. Houtman; Eranda Maligaspe; Christopher G. Hunt; Elena Fernández-Fueyo; Angel T. Martínez; Kenneth E. Hammel

Year:

2018

Keywords:

White rot fungus, lignin biodegradation, peroxidase, aryl cation radical

Source:

Journal of Biological Chemistry. 293(13): 4702-4712.

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