Extracellular oxidases of the lignin-degrading fungus Panus tigrinus

被引：10

作者：

Cadimaliev, DA

Revin, VV

Atykyan, NA

Samuilov, VD

机构：

[1] Ogarev Mordovian State Univ, Dept Biotechnol, Fac Biol, Saransk 430000, Russia

[2] Moscow MV Lomonosov State Univ, Biol Fac, Dept Physiol Microorgan, Moscow 119899, Russia

来源：

BIOCHEMISTRY-MOSCOW | 2005年 / 70卷 / 06期

关键词：

lignin; biodegradation; oxidase; laccase; white rot fungi; Panus (Lentinus) tigrinus;

D O I：

10.1007/s10541-005-0171-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Two extracellular oxidases (laccases) were isolated from the extracellular fluid of the fungus Panus (Lentinus) tigrinus cultivated in low-nitrogen medium supplemented with birch sawdust. The enzymes were purified by successive chromatography on columns with TEAE-cellulose and DEAE-Toyopearl 650M. Both oxidases catalyze oxidation of pyrocatechol and ABTS. Moreover, oxidase 1 also catalyzes oxidation of guaiacol, o-phenylenediamine, and syringaidazine. The enzymes have identical pH (7.0) and temperature (60-65 degrees C) optimums. Absorption spectra of the oxidases differ from the spectra of typical "blue" laccases and are similar to the spectrum of yellow oxidase.

引用

页码：703 / 707

页数：5

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