RBPs - RNA-binding proteins are involved in different aspect of post-transcriptional gene regulation. The Puf in S. cerevisiae are structurally related family of cytoplasmatic RBPs. The proteins got several consecutive repeats of the Pumilio homology domain (Pum-HD). Bind to the 3'UTR sequence. The five members bear 6-8 Puf (Pum-HD) repeats.
Your mission, should you choose to accept it, involves identify specific mRNAs that interact with the five members of the Puf family. Finding if there is a consensus sequence in the mRNAs that binds by those Puf members.