{"pdb_id": "1ref", "source_chain": "A", "source_residue_id": "4", "target_chain": "B", "target_residue_id": "158", "interaction_type": "VDW", "distance": 3.295}
{"pdb_id": "1ref", "source_chain": "B", "source_residue_id": "158", "target_chain": "A", "target_residue_id": "4", "interaction_type": "VDW", "distance": 3.295}
