CA ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 -59.1370 -43.8880 8.8070 CA 0 2 0 0 0 0 0 0 0 0 0 0 M END > 1qTuigsoykoPPVjrSaoTsQ > 2025-07-02 14:18:08 > 0.9.12 > ligand > pdb-bcif > 4rus > atom_site > {"label_asym_id":"U","auth_seq_id":303} > 21 > 20 > 19 > 253 > 0 > 1 $$$$