ReactomeInteractors Search Entity

Search Reactome for biological entities (proteins, complexes, reactions, pathways) by name or identifier. Returns Reactome stable IDs, entity names, types, and species. Use this to find Reactome IDs for proteins before querying their interactors or pathways. Results are grouped by entity type (Protein, Complex, Reaction, Pathway). Example: search 'TP53' returns TP53 protein entities with stable IDs like R-HSA-69488; search 'apoptosis' returns apoptosis-related reactions and pathways.