Pat Brown (the inventor of microarrays) just published a paper in PLoS Biology in which he described the identification of mRNA targets for 40 RNA-binding proteins. Not only it’s a very interesting study that emphasizes the extent of post-transcriptional regulation, but they also extensively use FIRE for motif discovery ( along with their homebrewed approach)
The other paper in Nature by Ruschlow and colleagues describes a protein that binds to a putative reglatory element (CAGGTAG) that we identified in our collaboration with Eric Wieschaus as highly over-represented upstream of the earliest zygotic genes in the Drosophila embryo (De Renzis, Elemento et al, PLoS Biology, 2007).They used one-hybrid assay to identify the zinc finger protein called Zelda.