integrase activity site-specific recombinase activity https://github.com/geneontology/go-ontology/issues/22264 https://github.com/geneontology/go-ontology/issues/3917 RecA-family recombinase activity Catalysis of the formation of new phosphodiester bonds between a pair of short, unique target DNA sequences. GO:0009009 molecular_function Note that this term is not a child of 'recombinase activity ; GO:0000150' because the latter represents activities that do not break or form phosphodiester bonds.