Reactome is an open-source, open access, manually curated and peer-reviewed pathway database.
STRING is a database of known and predicted protein-protein interactions
The Human Protein Atlas aims to map all the human proteins in cells, tissues, and organs using an integration of various omics technologies
TIN-X is an interactive visualization tool for discovering interesting associations between diseases and potential drug targets.
UniProt is a comprehensive resource for protein sequence and annotation data
X2K infers upstream regulatory networks from signatures of differentially expressed genes.