Methods / DNA isolation and purification

Microscale method for rapid isolation of covalently closed circular plasmid DNA from group N strepto


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A method for rapid purification of plasmid DNA from lactic streptococci, utilizing microliter quantities of reagents, was developed by combination of a short lysozyme-mutanolysin cell wall digestion with a modification of the Escherichia coli plasmid isolation procedure of McMaster et al. (Anal. Biochem. 109:47-54, 1980). The preparations obtained were highly enriched for covalently closed circular DNA, and the method was applicable to plasmids of at least 40 megadaltons. Centrifugation in CsCl-ethidium bromide density gradients was not required.

Applied and Environmental Microbiology.1984:47(4):677

Last update 15-Feb-2006, Rating n/a of 1 votes.

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