This short motif is about 40 amino acids in length. In the Fip1 protein that is a component of a yeast pre-mRNA polyadenylation factor that directly interacts with poly(A) polymerase. This region of Fip1 is needed for the interaction with the Th1 subunit of the complex and for specific polyadenylation of the cleaved mRNA precursor.
Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",