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    Home > Biochemistry News > Plant Extracts News > Plasmid Rescue: Recovery of Flanking Genomic Sequences from Transgenic Transposon Insertion Sites

    Plasmid Rescue: Recovery of Flanking Genomic Sequences from Transgenic Transposon Insertion Sites

    • Last Update: 2021-03-16
    • Source: Internet
    • Author: User
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    The transgenic
    RescueMu
    lines were designed for and successfully used in our maize gene discovery project. The pBluescript-containing
    RescueMu
    transposon can be readily recovered by a procedure called plasmid rescue. Plasmid rescue is a technique for recovering bacterial plasmids from transgenic eukaryotic genomic
    DNA
    . Total maize DNA was first digested with restriction enzyme(s), ligated, and then transformed into
    E. coli
    cells. Colonies were recovered under selection against the antibiotic marker(s) in the transgene vector. Ampicillin or carbenicillin was used for
    RescueMu
    transgene recovery. The flanking genomic sequences at
    RescueMu
    insertion sites were simultaneously captured and then sequenced using
    RescueMu
    -readout primers. Genomic DNA from an individual plant or from pooled samples of up to ∼50 plants could be used in a single rescue. Because the majority of transgenic constructs currently used in flowering plants were made in the form of plasmids, this protocol could therefore be adapted by and useful to researchers involved in other transgenic work and be versatile for characterizing transgene loci.
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