CA ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 17.8620 31.9160 9.4150 CA 0 2 0 0 0 0 0 0 0 0 0 0 M END > nhuXTBeONZ3GLfaXqtRBpA > 2025-07-06 11:29:33 > 0.9.12 > ligand > pdb-bcif > 4ko4 > atom_site > {"label_asym_id":"O","auth_seq_id":503} > 31 > 12 > 36 > 362 > 0 > 1 $$$$