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Transmissible plasmid coding early enzymes of naphthalene oxidation in Pseudomonas putida

Transmissible plasmid coding early enzymes of naphthalene oxidation in Pseudomonas putida

Journal of Bacteriology 114(3): 974-979

The capacity of Pseudomonas putida PpG7 (ATCC 17,485) to grow on naphthalene, phenotype Nah(+), is lost spontaneously, and the frequency is increased by treatment with mitomycin C. The Nah(+) growth character can be transferred to cured or heterologous fluorescent pseudomonads lacking this capacity by conjugation, or between phage pf16-sensitive strains by transduction. After mutagenesis, strains can be selected with increased donor capacity in conjugation. Clones which use naphthalene grow on salicylate and carry catechol 2,3-oxygenase, the initial enzyme of the aromatic alpha-keto acid pathway, whereas cured strains grow neither on salicylate nor naphthalene and lack catechol 2,3-oxygenase, but retain catechol 1,2-oxygenase and the aromatic beta-keto adipate pathway enzymes.

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Accession: 006829584

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PMID: 4712575

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