Ana Zupancic is a PhD student in the Ivarsson group at the Chemistry department of Uppsala University. She is using proteomic peptide phage-display (Pro-PD) to investigate how alternative splicing of pre-mRNA affects motif-based protein-protein interactions. She is also interested in exploring how motif-based protein-protein interactions contribute to the assembly and subsequent structural rearrangements of the major human spliceosome.