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  • Title: Characterization of the phospholipase C gene of Pseudomonas aeruginosa cloned in Escherichia coli.
    Author: Lory S, Tai PC.
    Journal: Gene; 1983 Apr; 22(1):95-101. PubMed ID: 6305775.
    Abstract:
    We have cloned a 4.9-kb fragment of Pseudomonas aeruginosa DNA containing the structural gene of phospholipase C (PLC), by inserting it into the BamHI site of plasmid pBR322. Strains of Escherichia coli carrying this recombinant plasmid produce PLC, but expression of the gene differs from that in P. aeruginosa in two respects: (i) synthesis of the enzyme appears to be constitutive, i.e., not repressible by the presence of inorganic phosphate in the growth medium, and (ii) most of the enzyme remains associated with the outer membrane instead of being secreted. Insertion mutagenesis at a unique restriction site within the PLC gene destroyed the ability of the plasmid to code, in maxicells, for phospholipase C activity and for an Mr 80000 polypeptide.
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