Compositions and methods for introducing a DNA of interest into a genomic
target site are provided. In particular, the methods and compositions
involve the use of a combination of target sites for two site specific
recombinases and expression of a chimeric recombinase with dual target
site specificity. Thus, the compositions comprise novel site-specific
recombinases with specificities to multiple target sites, and nucleotide
sequences and expression cassettes encoding these recombinases or target
sites. The methods involve transforming a eukaryotic cell having target
sites for the novel recombinase with a DNA of interest that is flanked by
corresponding target sites. Expression of the recombinase results in
integration of the DNA of interest into the genome of the cell. The
compositions and methods of the invention have use in the construction of
stably transformed eukaryotic cells, and in particular, plant cells. The
methods result in the efficient targeted genomic integration of DNA by
site-specific recombination.