ZN ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 69.6820 51.3520 -2.4980 ZN 0 2 0 0 0 0 0 0 0 0 0 0 M END > JfDFglh-Uyg4YkYi7eGHpw > 2025-07-15 02:20:33 > 0.9.12 > ligand > pdb-bcif > 1k53 > atom_site > {"label_asym_id":"E","auth_seq_id":1003} > 29 > 27 > 57 > 1252 > 0 > 1 $$$$