Characterization of attB and core-attP recombination sites of the integrase from Lactobacilus delbrueckii subsp. bulgaricus bacteriophage mv4
Different attB or attP DNA libraries containing 7-bp random nucleotides were used for in vitro recombination mediated by  the purified integrase from mv4 bacteriophage against their cognate wild-type attB or attP recombination site.