Mutations in the translation initiation region of the pac gene resulting in increased levels of activity of penicillin G acylase.

Abstract excerpt

Penicillin G acylase (PA) is an important enzyme used in the industrial production of b-lactam antibiotics. In this study, the effects of mutations in the translation initiation region of the Escherichia coli pac gene, encoding periplasmic PA, were examined. Several mutations led to increased amounts of PA activity, including those that lengthened the spacer region between the ribosome binding site and the ATG...

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