Evidence that Ceriporiopsis subvermispora degrades nonphenolic lignin structures by a one-electron-oxidation mechanism

Article Abstract:

Ceriopsis subvermispora does not express the lignin degrading enzyme lignin peroxidase yet it is able to metabolize lignin. Model lignin compounds were designed to yield fragments resistant to intracellular fungal metabolism to determine the mechanism with which Ceriopsis metabolize lignin. Results of radiocarbon nuclear magnetic resonance studies indicate that a one-electron-oxidation process is at work in the degradation of lignin in Ceriopsis.

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Chlorination and cleavage of lignin structures by fungal chloroperoxidases

Article Abstract:

Research has been conducted on fungal chloroperoxidases. The authors report that these chloroperoxidases have chlorinated 1-(4-ethoxy-3-methoxyphenyl)-2-(2-methoxyphenoxy)-1,3-dihydroxypropane, the major lignin's nonphenolic structure.

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New insights into the ligninolytic capability of a wood decay ascomycete

Article Abstract:

Daldinia concentrica degrades the recalcitrant nonphenolic structures in lignin. One of the processes responsible is the [C.sub.alpha]-[C.sub.beta] cleavage of the lignin propyl side chain.

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