Before revision: We systematically investigate the community structure of the yeast protein interaction network . We employ methods that allow us to identify communities in the network at multiple resolutions as, a priori, there is no single scale of interest.
After revision: Motivation: If biology is modular then clusters, or communities, of proteins derived using only protein-protein interaction network structure might define protein modules with similar biological roles. We investigate the connection between biological modules and network communities in yeast and ask how the functional similarity of the network at multiple resolutions as, a priori, there is no single scale of interest.