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. 2015 Sep 4;6:916. doi: 10.3389/fmicb.2015.00916

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Copyright © 2015 Picart, Domínguez de María and Schallmey.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Biocatalytic pathways for β-O-4 arylether degradation in nature. (A) Biocatalytic pathway of Sphingobium sp. SYK-6 involving bacterial alcohol dehydrogenases LigD, LigL, LigN, and LigO, glutathione (GSH)-dependent β-etherases LigE, LigP, and LigF as well as GSH-dependent glutathione lyase LigG (Tanamura et al., 2011). Applying an NADH-dependent glutathione reductase from Allochromatium vinosum (AVR), internal cofactor (NAD⁺ and GSH) regeneration could be achieved in an in vitro enzyme system consisting of LigD, LigF, and LigG for lignin depolymerisation (Reiter et al., 2013). (B) GSH-independent β-ether cleavage by a fungal β-etherase from Chaetomium sp. 2BW-1 (Otsuka et al., 2003).