CA ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 10.7260 45.5220 50.2560 CA 0 2 0 0 0 0 0 0 0 0 0 0 M END > crPtQabYBUxUkZtoAYc4Uw > 2025-04-26 18:21:02 > 0.9.12 > ligand > pdb-bcif > 5k31 > atom_site > {"label_asym_id":"I","auth_seq_id":301} > 87 > 17 > 22 > 291 > 0 > 1 $$$$