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  • Title: A versatile transformation system for the cellulolytic filamentous fungus Trichoderma reesei.
    Author: Penttilä M, Nevalainen H, Rättö M, Salminen E, Knowles J.
    Journal: Gene; 1987; 61(2):155-64. PubMed ID: 3127274.
    Abstract:
    An efficient transformation system for the cellulolytic filamentous fungus Trichoderma reesei has been developed. Transformation was obtained with plasmid carrying the dominant selectable marker amdS or the argB gene of Aspergillus nidulans, which was found to complement the respective argB mutation of T. reesei. The transformation frequency can be up to 600 transformants per microgram of transforming DNA. The efficiency of co-transformation with unselected DNA was high (approx. 80%). The transforming DNA was found to be integrated at several different locations, often in multiple tandem copies in the T. reesei genome. In addition, the Escherichia coli beta-galactosidase was expressed in T. reesei in enzymatically active form from the A. nidulans gpd promoter.
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