Plasmid Involvement in Parathion Hydrolysis by Pseudomonas diminuta |
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Authors: | Cü neyt M. Serdar, David T. Gibson, Douglas M. Munnecke, John H. Lancaster |
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Affiliation: | Cüneyt M. Serdar, David T. Gibson, Douglas M. Munnecke, and John H. Lancaster |
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Abstract: | An organism identified as Pseudomonas diminuta was found to hydrolyze parathion. Cells grown for 48 h contained 3,400 U of parathion hydrolase activity per liter of broth. Expression of enzymatic activity was lost at a high frequency (9 to 12%) after treatment with mitomycin C. Hydrolase-negative derivatives were missing a plasmid present in the wild-type organism. The molecular mass of this plasmid (pCS1), as determined by electron microscopy, was about 44 × 106 daltons. |
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