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. 1976 Apr;126(1):410-6.
doi: 10.1128/jb.126.1.410-416.1976.

Isolation of plasmid deoxyribonucleic acid from Pseudomonas putida

S Palchaudhuri, A Chakrabarty

Isolation of plasmid deoxyribonucleic acid from Pseudomonas putida

S Palchaudhuri et al. J Bacteriol. 1976 Apr.

Abstract

Conditions suitable for reproducible recovery of covalently closed circular deoxyribonucleic acid from strains of Pseudomonas putida containing degradative plasmids (CAM, SAL, OCT, etc.) have been defined. These degradative plasmids could not be isolated by the usual procedure, whereas RP1, an R factor of the P group, present in the isogenic strain of P. putida, was isolated equally well by either the usual procedure or the modified procedure. Characterization by electron microscopy of RP1 deoxyribonucleic acid confirmed the molecular weight (about 40 X 10(6)) previously determined by sucrose gradient centrifugation.

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