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. 1980 Jul 1;189(1):51–65. doi: 10.1042/bj1890051

The isolation, purification and properties of the cellobiohydrolase component of Penicillium funiculosum cellulase.

T M Wood, S I McCrae, C C Macfarlane
PMCID: PMC1161917  PMID: 7458906

Abstract

1. A cellobiohydrolase component was isolated from a Penicillium funiculosum cellulase preparation by chromatography on DEAE-Sephadex, and purified by isoelectric focusing. 2. Purified in this way, the enzyme was homogeneous as judged by electrophoresis on sodium dodecyl sulphate/polyacrylamide gels and isoelectric focusing in polyacrylamide gels. 3. Acting in isolation, the enzyme had little hydrolytic activity to highly ordered celluloses such as cotton fibre, but, when recombined in the original proportions with the other components [endo-(1 leads to 4)-beta-D-glucanase and beta-D-glucosidase] of the complex, 98% of the original activity was recovered. 4. Synergistic effects were also observed when the enzyme was acting in concert with endo-(1 leads to 4)-beta-D-glucanase from other fungal sources. 5. Less-well-ordered celluloses, such as that swollen in H3PO4, were extensively hydrolysed, the principal product being cellobiose. 6. Attack on carboxymethyl-cellulose (CM-cellulose), which is the substrate normally used to assay for endo-(1 leads to 4)-beta-D-glucanase activity, was minimal. 7. The enzyme was associated with 9% of neutral sugar, 88% of which was mannose. It was isoelectric at pH 4.36 (4 degrees C) and had a mol.wt. of 46 300 (determined by gel chromatography on a calibrated column of Ultrogel). 8. The enzyme was specific for the beta-(1 leads to 4)-linkage.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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