26S proteasome crosslinking mass spectrometry data for mi-filter

In this project we are describing a novel mono- and intralink filter (mi-filter) that is applicable to any kind of crosslinking data and workflow. It stipulates that only proteins for which at least one monolink or intra-protein crosslink has been identified within a given dataset are considered for an inter-protein cross-link and therefore participate in a PPI. We show that this simple and intuitive filter has a dramatic effect on all types of crosslinking-data ranging from single protein complexes, over medium-complexity affinity enrichments to proteome-wide settings and significantly improves false-discovery rates for inter-protein links in all types of XL-MS data.