Hello,
I am observing an enrichment of a ~30 bp motif in promoters of a group of ~20 genes of my interest. I guess, it is too large for a single TF binding site. Just wonder, is a typical thing to find such a large motif or rather not typical?
Thanks!
It also depends on the target proteins. If the data is from histone modification study, you may find long motifs as histones spans a large part of DNA. Hence, reads generated from those regions gives you long motifs.
What is the target protein of your experiment/data?