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. 1979 Nov 24;7(6):1513–1523. doi: 10.1093/nar/7.6.1513

A rapid alkaline extraction procedure for screening recombinant plasmid DNA.

H C Birnboim, J Doly
PMCID: PMC342324  PMID: 388356

Abstract

A procedure for extracting plasmid DNA from bacterial cells is described. The method is simple enough to permit the analysis by gel electrophoresis of 100 or more clones per day yet yields plasmid DNA which is pure enough to be digestible by restriction enzymes. The principle of the method is selective alkaline denaturation of high molecular weight chromosomal DNA while covalently closed circular DNA remains double-stranded. Adequate pH control is accomplished without using a pH meter. Upon neutralization, chromosomal DNA renatures to form an insoluble clot, leaving plasmid DNA in the supernatant. Large and small plasmid DNAs have been extracted by this method.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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