PDBe KB Get Interface Residues

Get protein-protein interaction interface residues for a UniProt protein from PDBe-KB. Returns residue positions (UniProt numbering) at interaction interfaces with other proteins, the identity of interaction partners, and PDB structures where each interface was observed. Essential for understanding protein complex formation, designing interface-disrupting mutations, and identifying functional hotspots. Example: P04637 (TP53) shows interaction interfaces with MDM2, p53BP2, and DNA.