YT3 ModelServer 0.9.12 1 0 0 0 0 0 0 0 0 0 0 31.9080 26.6110 53.6310 Y 0 1 0 0 0 0 0 0 0 0 0 0 M END > IjqDB1D6BV-baKDVwZjRkg > 2025-07-15 11:21:43 > 0.9.12 > ligand > pdb-bcif > 1st4 > atom_site > {"label_asym_id":"E","auth_seq_id":502} > 49 > 8 > 6 > 268 > 0 > 1 $$$$