Given a transcription factor, what genes does it regulate? I have a list of transcription factors and I am interested in finding out which which genes might be transcribed as a result of the formation of transcription factor complexes with that transcription factor.

Any ideas on good databases? I've seen that ENCODE hosts data from CHIPseq experiments, but I'm not sure if I can find conclusions regarding interactions from this site. I'm looking for a database with known or putative transcription/gene interactions.

Thanks in advance.
MSigDB has a collection (C3:TFT) of gene sets corresponding to transcription factor targets.

Harmonizome has functional terms for genes extracted from over a hundred publicly available resources.