Two kinds of laccases from Coriolus versicolor culture were purified to electrophoretic homogeneity by the combination of ultrafiltration and DEAE-Sephadex A-250 ion exchange chromatography. And they were identified by the colorness development of zymogram stained with guaiacol after polyacrylamide gel electrophoresis (PAGE), and named LacA and LacB, respectively. The specific activities of enzymes in purified samples are 9.3-folds and 3.41-folds of those in crude samples with an overall yield of 18.2% for ...
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