Try STRING database:

http://string-db.org/

http://string-db.org/newstring_cgi/show_network_section.pl

Go to the STRING database:

http://string-db.org/

Enter Irf7 and organism you are studying.

You will get information about summary Irf7 network and you can also see, whether the network data results from coexpression data, molecular analyses of protein-protein interactions and/or from textmining.

What about performing a Chip-Seq experiment to identify promoter regions bound by Irf7? This is an unbiased approach and will most likely yield interesting results. Downside, you need to have a good antibody that works in the Chip assay and you need a good bioinformaticist to help with analysis of the data. Good luck with your research.

You are right, Jonathon, my answer concerned only theoretical approach to analysis of Irf7 interactions.