Fig. 1: Overlap between Unique human PPIs from different resources.

The intersection plot shows several PPI resources as well as legacy data curated by IMEx partners. Individual resource sizes are displayed as horizontal bars on the lower left corner of the image. Intersection sizes are shown as individual bars, with those including IMEx data highlighted in grey. Specific resources involved in each intersection are identified with connected solid black circles under the vertical bars, with unconnected circles representing pairs that are found exclusively in the corresponding database. Shading in the background of the circles helps differentiate between primary databases (green) and meta-databases (orange). Only the experimentally-derived content of the IID and STRING databases was used, excluding all predicted or text-mined interaction data. Only the 20 largest of all possible intersections are shown for clarity.