CA ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 31.2310 43.3350 185.3390 CA 0 2 0 0 0 0 0 0 0 0 0 0 M END > ByaevPJc-kSersgT2qIPjw > 2025-07-01 22:44:44 > 0.9.12 > ligand > pdb-bcif > 1xk4 > atom_site > {"label_asym_id":"U","auth_seq_id":4501} > 11 > 9 > 11 > 297 > 0 > 1 $$$$