Abstract
In this protocol, the homology arm sequence for one-step bacterial artificial chromosome (BAC) modification is introduced by ligation into the shuttle vector carrying the reporter sequence to provide sites for recombination within the BAC clone. Crude lysates of individual bacterial transformants serve as templates in polymerase chain reaction (PCR) analysis to confirm the presence of the homology arms in the recombinant shuttle vector. To provide further assurance that the homology box has been successfully integrated into the plasmid, the enzyme digestion pattern of the modified plasmid is compared with that of the unmodified plasmid.
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