ZN ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 18.5440 -13.3510 -3.5480 ZN 0 2 0 0 0 0 0 0 0 0 0 0 M END > XnsQNBSCR3lZcQ2SOTHNeQ > 2025-07-10 19:26:12 > 0.9.12 > ligand > pdb-bcif > 4k1r > atom_site > {"label_asym_id":"G","auth_seq_id":503} > 8 > 6 > 4 > 274 > 0 > 1 $$$$