Directionality in FLP protein-promoted site-specific recombination is mediated by DNA-DNA pairing.


The 2 mu plasmid of the yeast Saccharomyces cerevisiae encodes a site-specific recombination system consisting of plasmid-encoded FLP protein and two recombination sites on the plasmid. The recombination site possesses a specific orientation, which is determined by an asymmetric 8-base pair spacer sequence separating two 13-base pair inverted repeats. The… (More)


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