Aromatic ring cleavage of β‐O‐4 lignin model dimers without prior demeth(ox)ylation by lignin peroxidase

FEBS Letters

Umezawa, Toshiaki¹  Higuchi, Takayoshi¹ 

[1] Research Section of Lignin Chemistry, Wood Research Institute, Kyoto University, Uji, Kyoto 611, Japan

关键词: Aromatic ring cleavage Lignin peroxidase β-O-4 lignin substructure Methyl oxalate Demethylation Demethoxylation;   

DOI  :  10.1016/0014-5793(86)80915-2

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Methyl oxalate of arylglycerol was formed as an aromatic ring cleavage product in degradation of arylglycerol-β-aryl ether (β-O-4) type lignin substructure model dimers by extracellular lignin peroxidase of Phanerochaete chrysosporium. The enzymatic cleavage of arylglycerol-β-(o-[²H₃]methoxyphenyl) ether indicated that the methyl group of the methyl ester was derived from the methoxy group of the β-O-4 model dimer. It is thus concluded that demeth(ox)ylation was not essential for the enzymatic aromatic ring cleavage of the methoxylated aromatic substrates, β-O-4 lignin substructure models.

【 授权许可】

Unknown