Methods / DNA isolation and purification
A rapid method for the isolation of circular DNA using an aqueous two-phase partition system.
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A method of isolating circular plasmid DNA from cleared lysates of E. coli is described. Purification is achieved by virtue of the rapid re-annealing kinetics or supercoiled DNA. After a brief denaturation step, double stranded plasmid DNA is separated from denatured chromosomal DNA and RNA in a two-phase partition system using dextran and polyethylene glycol. The method is much more rapid than the conventional dye-centrifugation technique and plasmid DNA of comparable purity and yield is obtained.
Nucleic Acids Research.1978:5(2):583
Last update 30-Nov-1999, Rating n/a of 0 votes.
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