Role of secondary attachment sites in changing the specificity of site-specific recombination.

Abstract excerpt

We previously proposed that lambdoid phages change their insertion specificity by adapting their integrases to sequences found in secondary attachment sites. To test this model, we quantified recombination between partners that carried sequences from secondary attachment sites catalyzed by wild-type and by mutant integrases with altered specificities. The results are consistent with the model, and indicate...

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