STRING

Homepage Link: https://string-db.org/

Description: The Search Tool for the Retrieval of INteracting Genes/proteins (STRING) database provides information on known and predicted protein-protein interactions (both direct and indirect) derived from genomic context predictions, high-throughput laboratory experiments, conserved co-expression, automated text mining, and aggregated knowledge from primary data sources.

Example edge: RAB1B protein (human) is homologous to ARF5 protein (human)

Data sources: https://string-db.org/