CA ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 27.5430 59.7160 49.4260 CA 0 2 0 0 0 0 0 0 0 0 0 0 M END > GjaBZtF9lBDtBgqSzd3eHQ > 2025-07-12 00:49:58 > 0.9.12 > ligand > pdb-bcif > 4dk7 > atom_site > {"label_asym_id":"K","auth_seq_id":507} > 52 > 12 > 4 > 255 > 0 > 1 $$$$