BR ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 51.5790 45.8770 220.7350 BR 0 5 0 0 0 0 0 0 0 0 0 0 M END > j8Qfka6yWZOHLL57VAIdxw > 2025-07-12 18:55:50 > 0.9.12 > ligand > pdb-bcif > 6r2n > atom_site > {"label_asym_id":"O","auth_seq_id":501} > 26 > 12 > 18 > 271 > 0 > 1 $$$$