Construction of DNA Marker Plasmids Based on Taq Tailing Activity and Selective Recovery of Ligation Products

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DNA fragments with standard molecular weights (DNA markers, which are usually commercial products) are routinely electrophoresed in conjunction with DNA samples in molecular biology labs to serve as references for DNA molecular weight; this is done by referencing their relative molecular weights. In this study, we present a new technical strategy for constructing super-plasmids for homemade DNA marker production with single restriction enzyme digestion. In this study, two super-plasmids for DNA marker production have been developed, based on tailing activity of Taq polymerase and selective recovery of ligation products following agarose gel electrophoresis.

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