I Know that the consensus sequence for Smads is the so-called CAGA-box, that comprises the main CAGA motif, (i.e. CAGACA),
but also the CAGA-like motifs. I'm interested in retrieving a weighted matrix for the CAGA-box motif in order to scan
the promoter sequence of my gene of interest for this motif. I was wondering if it exists a database where I can directly retrive
this WM or I should take another, and longer, route?