K ModelServer 0.9.11 1 0 0 0 0 0 0 0 0 0 0 43.1950 51.2630 4.4470 K 0 3 0 0 0 0 0 0 0 0 0 0 M END > Z90KTQxLwT8Mv6t1cPlwew > 2024-05-29 18:13:47 > 0.9.11 > ligand > pdb-bcif > 2b21 > atom_site > {"label_asym_id":"D","auth_seq_id":503} > 3 > 69 > 4 > 334 > 0 > 1 $$$$