The conference aims to gather scientists from molecular cell biology, biochemistry, structural biology, biophysics and bioinformatics with the common interest to explore the immensely important field of protein-protein interactions. The particular focus of the conference will be on molecular aspects of protein-protein interactions. Topics will include theory and computation, thermodynamics & kinetics, intrinsically unstructured protein complexes, PPI in disease and drug development, protein interaction networks, signaling complexes, membrane protein complexes, emerging and single molecule techniques, evolution and design as well as large multi-protein complexes. Fundamental and applied problems in these fields will be discussed from an interdisciplinary perspective.