CA ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 20.6760 31.5310 151.6670 CA 0 2 0 0 0 0 0 0 0 0 0 0 M END > QPQKbZ5xcjlXOQBurcQEaw > 2025-07-07 04:54:29 > 0.9.12 > ligand > pdb-bcif > 1xk4 > atom_site > {"label_asym_id":"Q","auth_seq_id":2502} > 11 > 11 > 20 > 326 > 0 > 1 $$$$