ZN ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 18.7810 129.8810 27.5330 ZN 0 2 0 0 0 0 0 0 0 0 0 0 M END > CTsk-CGruXMehoZVGW9epA > 2025-07-12 18:16:28 > 0.9.12 > ligand > pdb-bcif > 4fec > atom_site > {"label_asym_id":"AA","auth_seq_id":506} > 23 > 10 > 9 > 278 > 0 > 1 $$$$