HAPPI database v2.0 contains 640,798 physical and functional human protein-protein interactions, perfect for network biology and network medicine studies.

In HAPPI, each protein interaction is given a physical binding confidence rating between 1 and 5, based on our computerized assessment.

In HAPPI, you can personalize the searches by adding personal annotation notes and saving results for the future.

As a HAPPI user, you can build and save customized list of PPIs for future analysis.