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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

The upstream region of the IPNS gene determines expression during secondary metabolism in Aspergillus nidulans.

We have constructed a translational fusion between the isopenicillin-N-synthetase-encoding gene (IPNS) of Aspergillus nidulans and the lacZ gene of Escherichia coli. Recombinant strains carrying a single copy of the fusion integrated at the IPNS locus produced beta-galactosidase (beta Gal) during secondary metabolism. Integration of the fusion at the argB locus results in a situation in which the only 5'-flanking sequences of the IPNS gene upstream from the chimeric fused gene are those included in the transforming plasmid. Such a strain still expresses beta Gal activity during secondary metabolism, showing that a DNA fragment including sequences of the IPNS gene from nt -2000 to +35 (relative to the translation start codon) still contains sufficient information to drive expression of the fusion gene during secondary metabolism.[1]

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