- open in new windowMiMI Michigan Molecular Interactions
- open in new windowiHOp information HYPERLINKed over Proteins
- open in new windowIntAct- database system and analysis tools for protein interaction data
- open in new windowHPRD - Human Protein Reference Database
- open in new windowBIND- The Biomolecular Interaction Network Database
- open in new windowDIP experimentally determined interactions between proteins
- MINT functional interactions between biological molecules (proteins, RNA, DNA)
- open in new windowHomoMINT an infered Human network ( interactions experimentally verified)
- open in new windowHPID - Human Protein Interaction Database
- open in new windowInterPro - a database of protein
- open in new windowSTRING - Search Tool for the Retrieval of Interacting Genes/Proteins
- open in new windowiPfam - domain-domain interactions that are observed in PDB entries
- open in new windowDOMINE a database of protein interactions
- open in new windowMIPS Mammalian Protein-Protein Interaction database
- open in new windowBioGRID - general repository for interactions in 13 model organisms
- open in new windowNetworkBlast -analyzes protein interaction networks across species
- open in new windowAtPID The Arabidopsis thaliana Protein Interactome Database