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The cDNA encoding for catalytic subunit of bovine enterokinase (EK L ), to which the sequence for Kex2 protease cleavage site was inserted, was expressed in the protease deficient filamentous fungus Aspergillus niger AB1.13. Fungal transformants were obtained in which expression of the glucoamylase fusion gene resulted in secretion of the protein into growth medium. Fusion polypeptide was...
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