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The regulation of the pac gene encoding the penicillin G acylase of Escherichia coli W ATCC 11015 has been investigated by a molecular approach using lacZ as a reporter gene. This analysis revealed that a region of 170 bp located upstream of the pac structural gene contains the regulatory sequences that control its expression. The cAMP receptor protein is involved not only in the catabolite repression...
The nucleotide sequence of the 5 -terminal region of the pac gene encoding the penicillin G acylase from Kluyvera citrophila ATCC 21285 has been determined. The transcriptional start site has been identified by primer extension analysis in a different position to that previously found for the homologous pac gene of Escherichia coli W ATCC 11105. Two nucleotide changes in the -35 box appear to be...
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