Some examples to try
The predicted PxLxIxT motif interaction with the Nematode kinase lit-1
Input the set of proteins in C.elegans interacting with the lit-1 kinase (from Neduva et al, 2005) found here. As perpetrator sequence, paste this sequence. Don't forget to set the species to C.elegans.
An SH3 binding motif in interactions of SORBS3
A set of human interactions with SORBS3 (an SH3 domain containing protein). Set the input type to "interactions" and then paste in these interactions from BioGrid.
An acidic motif binding the GLC7 (PP1)
Input the set of proteins in S.cerevisae interacting with the phosphatase GLC7 (PP1; from Neduva et al, 2005) found here. As perpetrator sequence, type GLC7 into the "Interacting protein" box. Don't forget to set the species to S. cerevisae.