STRING is a database of known and predicted protein-protein interactions. The interactions include direct (physical) and indirect (functional) associations; they stem from computational prediction, from knowledge transfer between organisms, and from interactions aggregated from other (primary) databases.

Data Sources Interactions in STRING are derived from five main sources:

  • Genomic Context Predictions
  • High-throughput Lab Experiments
  • (Conserved) Co-Expression
  • Automated Textmining
  • Previous Knowledge in Databases

The STRING database currently covers 24,584,628 proteins from 5090 organisms.