Summary
We have cloned a mutant oligomycin resistance allele of the mitochondrial ATP synthase subunit 9 gene from the filamentous fungus Penicillium chrysogenum. The gene was isolated using the equivalent gene from Aspergillus nidulans as a hybridisation probe. Using the cloned gene it is possible to select for oligomycin resistance in P. chrysogenum transformation experiments. This transformation system was used to introduce further copies of the P. chrysogenum isopenicillin N synthetase gene, which were stably maintained without selection. An assessment of the frequency with which homologous integration occurs was also made. With this system, it should prove possible to transform any strain of P. chrysogenum.
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Bull, J.H., Smith, D.J. & Turner, G. Transformation of Penicillium chrysogenum with a dominant selectable marker. Curr Genet 13, 377–382 (1988). https://doi.org/10.1007/BF00365658
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DOI: https://doi.org/10.1007/BF00365658