Protein Structure Data Retrieval Retrieve protein structures with disambiguation, quality assessment, and comprehensive metadata. IMPORTANT : Always use English terms in tool calls. Respond in the user's language. LOOK UP DON'T GUESS : Never assume PDB IDs, resolution, or availability. Always query RCSB/PDBe and AlphaFold to confirm. Domain Reasoning Not all structures are equal. X-ray <2 A is high-quality for drug design. Cryo-EM 3-4 A is good for fold but not side chains. AlphaFold is excellent for well-folded domains but unreliable for disordered regions. Always check pLDDT (AlphaFold) or…